The Berlin-based software company skobbler introduces GPS Navigation & Maps for Android. Available starting today, Skobbler’s Android app is the first on-and offline-enabled mapping and navigation app for Android smartphones and tablets. Skobblertypisch is offered at a competitive price. For only one euro customers receive the full global online functionality and a whole country of choice for offline installation, which it is available without an Internet connection. Owners of the full version can expand additional areas offline at any time. OpenStreetMap maps used in the app can be stored locally on the smartphone or deleted and available online after purchase – depending on requirements and storage capacity of the mobile device.
The features of GPS Navigation & Maps at a glance:
– Fully-fledged navigation with voice guidance for car navigation (turn-by-turn)
– Fully interactive OpenStreetMap Map
– A single card with worldwide coverage
– Hybrid: Full functionality with and (after installation) without internet connection (online + offline)
– Installability whole countries included the City Maps (WiFi recommended)
– super fast reloading the map – zoom, rotate, etc. without reloading
– Continuous free map updates
– Powerful card technology (NGx)
– route display (cars, pedestrians)
– Convenient route options for adequate routing (fastest, shortest, most efficient route )
– Multiple map styles (day, night, outdoor) for the best possible user experience in any situation
– 2D and 3D view (with navigation)
– Various search options (address search, category search, proximity search)
– IdeaLog for feedback to the developers
– Comfortable favorites lists
– Optional Synchronization of favorites with the web portal maps.skobbler.com
– “avoid highway” function
– “Avoid toll roads” function
– App works in portrait and landscape format
– Full compatibility with smart phones and tablets
– one land card with purchase already included
“Our users can rejoice: Instead of having to fumble around with annoying hundreds of individual maps, GPS Navigation & Maps offers the whole world as a map and navigation from within an app,” said Marcus Thiel King of skobbler.
Sponsored by: Hemisphere Broadcast Date: Thursday, May 16, 2013 Moderator:Alan Cameron, Editor & Publisher, GPS World Speakers: Mark Sampson, LabSat Product Manager, RaceLogic; John Fischer, Chief Technology Officer, Spectracom; Markus Lörner, Product Manager, Rohde & Schwarz; Steve Hickling, Lead Product Manager, Spirent Communications; Mark Wilson, Vice President of Sales, IfEN GmbH
Simulation and testing experts offer key technical insights on the intricacies and importance of product and signal testing, whether by simulator, record-and-replay, or in the field, in the increasingly complex environment of multiple modernizing and expanding GNSS signals, from GPS III to BeiDou, with Galileo coming on strong and GLONASS a perennial standby.
Being a person who enjoys spending time in the field using RTK and DGPS, I followed up on my column last month, “Sources of Public, Real-time, High-Precision Corrections,” with a trip to the field to test the NGS CORS Streaming service. About a month ago, I made a trip to Colorado to attend the Space Weather Workshop in Boulder, stop by the SPAR conference in Colorado Springs, and visit with some of my colleagues in the Denver area.
When I arrived in Denver, my plan was to meet Tim Smith (GPS Coordinator for the U.S. National Park Service) and travel to the Bakerville GPS test site in the Rocky Mountains, which was at about ~11,000 feet in elevation. My intent was to test the CORS Streaming and PBO real-time streaming that I discussed last month to better understand the accuracy and reliability of those services.
I arrived at the Denver airport early on a Monday ready to rock and roll into the Rockies with some high-precision GNSS equipment. As it turned out, I was denied. In Colorado, the weather is dynamic. It was quickly degrading when I arrived in Denver. Snow was definitely in my future for the next few days. Tim made the decision that we shouldn’t travel to Bakerville. The reason for Tim’s trepidation wasn’t necessarily due to the weather in Bakerville, but rather that the I-70 Interstate might turn into a parking lot and we’d be stuck in traffic for a few hours. Fair enough. The backup plan was to do some local testing in the parking lot adjacent to Tim’s office in Denver.
Tim invited Mel Philbrook to join us. Mel is a long-time GNSS technologist who works for the local Trimble dealer. He brought an SUV full of Trimble GNSS equipment, including one of the new R10 GNSS units as well as a GeoXH handheld with an external antenna.
Mel also had an Intuicom RTK Bridge in the trunk of his SUV that facilitated the different sources of RTK reference data we could use. He could switch from CORS Streaming to the local VRS via NTRIP to UHF at the flip of a switch, sending corrections to both the R10 and the GeoXH. I was particularly interested in seeing how the units performed using CORS Streaming, which is/was a free RTK service (single baseline) that was in beta test phase. In Oregon, I don’t have access to CORS Streaming because the only CORS Streaming station west of the Mississippi River is in Boulder, Colorado. The station is TMGO (Table Mountain CORS).
The baseline distance from TMGO to our location was about 55 km. The R10 was reporting a horizontal precision of about 4 cm. Not bad for a 55-km baseline. I didn’t compare the results to a survey mark (shame on me, but keep reading because I get to that) so I’m trusting the R10’s precision estimate. Tim said he’s run the test before using a GeoXH and a longer baseline and saw sub 10-cm horizontal precision. It’s not what the typical person using short baseline or RTK network is accustomed to, but for the high-precision GIS user who’s mapping utility, transportation, and infrastructure, that’s pretty darn good.
Tim, Mel and I spent an hour or so messing around with the equipment before packing it up. Not a very scientific study, but it confirmed that CORS Streaming was accessible via NTRIP and reasonably accurate.
In the meantime, the snow wasn’t letting up. This is the view as I was leaving Tim’s office to head to Boulder for the Space Weather Workshop:
I wasn’t finished with my CORS Streaming testing yet. My experience at Tim’s office gave me enough confidence to allocate time later in the week to conduct a more detailed test after the Space Weather Workshop. Hopefully, the weather would cooperate (call me a fair-weather field guy).
Space Weather Workshop
Every April, NOAA’s Space Weather Prediction Center in Boulder hosts the Space Weather Workshop (SWW), a gathering that has evolved into the leading conference in the U.S. for space weather-related topics. It attracts attendees, experts and speakers from all over the world. The discussion isn’t centered on GNSS, but GNSS certainly is a topic that is discussed. This year’s central topic was the electric power grid. You can view the SWW program here.
Believe it or not, this month (May 2013) was the predicted “solar maximum” for the current solar cycle (Solar Cycle 24, an 11-year cycle). However, Solar Cycle 24 has been unexpectedly weak. See the following slide presented by Doug Bisecker of the Space Weather Prediction Center. Doug is the Chairman of the Solar Cycle 24 Prediction Panel. His question, “Is there any chance we can still salvage some respectability?” speaks volumes about the difficulty in predicting space weather.
Source: Doug Bisecker presentation at the 2013 Space Weather Workshop
From the above, you can see the actual number of sun spot occurrence has been significantly less than predicted. Although sun spots aren’t what cause GNSS receivers to have problems, sun spots can indicate the amount of solar activity, which can be related to geomagnetic storms. Geomagnetic storms disturb the ionosphere and are the events that cause the most problems for GNSS receivers. Looking at the top chart above, you can see the difference in activity between the last solar maximum (peaked in early 2002) and today. The difference is clearly significant.
Does this mean we, the high-precision GNSS users, get a free pass on Solar Cycle 24?
Not at all.
Historically speaking, the most extreme geomagnetic storms (e.g., Oct/Nov 2002) have occurred after the solar maximum so our sensitivity to this issue should be keen for the next two years. Furthermore, there are orders of magnitude more high-precision GNSS receivers being used than ever before, and in mission-critical applications such as auto-steer in machine control (agriculture, construction, etc.). Most GNSS high-precision users today haven’t experienced the effects of an extreme geomagnetic storm. For a short primer on the effects of solar activity on GNSS/GPS, you might want to take a look at this article I wrote in 2008 as well Richard Langley’s 2011 Innovation column “GNSS and the Ionosphere.” In addition to the content, they both contain some valuable links to relevant articles.
In line with a goal of the workshop, a panel of GNSS professionals looked at issues that users face as they go about their business at solar max. The panel was “Global Navigation Satellite System (GNSS) Services: Research Needed to Fill Operational Gaps.” Joe Kunches (SWPC) moderated the panel that included Dr. Geoff Crowley (Astra), Dr. Anthea Coster (MIT), Capt. Steven Miller (USAF) and myself. We highlighted precision GNSS, satellite navigation for commercial aviation (ADS-B), and current work to better understand the errors the ionosphere imposes on user activities.
Something else I learned at the conference was how tough ionospheric scintillation is on GNSS receivers in Brazil. I feel for those users. When I mentioned I was traveling to Chile for an RTK project, the scientists said it is worse in Chile than the U.S., but still not as bad as Brazil. I’ll be very interested to experience how different it is than the U.S. (or other parts of the world where I’ve traveled).
I keep a pretty close eye on space weather and in contact with NOAA’s Space Weather Prediction Center. When I hear of a space weather event that may affect high-precision GNSS/GPS receivers, I send out a Tweet with the hashtag #SolarActivity. You can follow me on Twitter at https://twitter.com/GPSGIS_Eric.
From Space Weather Back to Local Weather
As the week progressed during the Space Weather Workshop, the snow continued. Boulder looked like Christmas in April.
I really wanted to spend some more time in the field to test the accuracy of the NGS’s CORS Streaming service and I was running out of time. In order to perform the test the way I wanted, I needed to find a local NGS survey mark that was observed using GPS. I checked out the NGS survey mark database and got lucky. There was one (PID = KK2060) located on a vista point parking area off of Highway 36 on the way from my hotel to the Space Weather Workshop. I couldn’t have asked for a better or more convenient survey mark location. I was planning to use a Bluetooth GNSS receiver so I could actually collect data while sitting in my car.
On Thursday morning, Mother Nature cleared her skies for me so I drove to the vista point. Remember, there’s a couple of feet of snow on the ground, so I was really hoping to see some kind of wood lathe that would get me close to the survey mark (no, I didn’t preload the KK2060 coords in my GPS L). Fortunately, a wood stake was near the survey mark. However, I didn’t have a shovel or a metal detector so it was either using my hands to shovel and search under two feet of snow for the mark, or…thanks to the rental car company, the car came with a healthy-sized windshield scraper. After 15 minutes of digging in the snow with a windshield scraper, I found KK2060. I’m sure to the people parked on the vista enjoying the view; I looked very suspicious using a windshield scraper to dig a hole in the snow. I wouldn’t have been surprised if a state trooper had shown up.
KK2060 recovered from under two feet of snow with a windshield scraper.
My final challenge was…no tripod or tribrach. I travel light and didn’t want to pack a set and, of course, I forgot to ask Tim if I could borrow a set. It’s never a good idea to set a GNSS antenna directly on the ground, but the antenna was small (<3” in diameter) and I did have a 5” diameter ground plane with about a 1” post. I was able to place it over the survey mark with reasonable confidence.
As I mentioned before, I was using a Bluetooth GNSS receiver (GPS L1/L2, GLONASS), the SXBlue III GNSS.
To collect the data, I was using an SXPad handheld with an AT&T SIM card for the Internet connection. For data-collection software, I used VisualGPSce, a free GPS data-collection program that collects and displays raw NMEA data. Although it doesn’t display enough digits of precision for the horizontal position, it accomplishes the simple task of collecting NMEA-formatted data without applying any transformation so I get the raw NMEA-formatted data from the receiver. It also displays some useful information such as PDOP, RTK indicator and elevation.
The last piece of data-collection software I used was a free NTRIP client software written by the SXBlue people called SXBlue RTN. I needed an NTRIP client software to access the CORS Streaming mount point. The software manages the IP address, port and login/pwd of the CORS Streaming system.
Logging into the NGS CORS Streaming site was painless, and within a few seconds I had an RTK FIXed position from the GNSS receiver, all from the comfort of my rental car, thanks to long-range Bluetooth. I collected ~45 minutes of NMEA data (1-Hz data rate) without interruption.
When I returned to the office, I began the process of comparing the results from CORS Streaming to the NGS survey mark coordinate. I checked with NGS and they reported that CORS Streaming is referenced to the ITRF00 (epoch 1997.0) datum. The KK2060 coordinate is published in NAD83/2011 (epoch 2010.0). I needed to reconcile the datum difference before performing any analysis so I used the NGS HTDP (Horizontal Time Dependent Positioning) online tool to accomplish this.
Finally, I used NMEA Analyzer (custom-built software for performing statistical analysis on GNSS NMEA data to NSSDA horizontal accuracy standards) to calculate accuracy (not precision) values of the data. I set up the NMEA Analyzer software to randomly select 200 epochs out of the ~2,700 collected to mitigate any bias due to filtering or other receiver “tricks”. Following are the horizontal results:
Not bad for an antenna sitting on the ground and an 18-km baseline using a $6,000 GNSS receiver and a free RTK base station. Folks, this is the direction that GNSS technology is heading. The continued proliferation of high-precision GNSS infrastructure (RTK networks, real-time PPP, etc.) and the falling prices of RTK GNSS receivers will dramatically increase the availability of high-precision technology to those who previously could not afford to make the investment.
I didn’t get a chance to test the PBO real-time streaming while I was in Colorado, but fortunately there are many PBO real-time stations that I can test from the comfort of my home office here in Oregon. In fact, there are so many in Oregon and Washington that I can test many different baseline distances to understand what accuracy users can expect. Look for my test results on that sometime this summer.
National Geodetic Survey (NGS) Suffering
Only a week after I did my field test of NGS’ CORS Streaming system in Colorado, NGS announced it was shutting down the CORS Streaming service effective April 26. On April 23, NGS issued the following notice by email:
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The National Geodetic Survey’s prototype Real Time GNSS Data Service (Streaming CORS) will be discontinued effective April 26, 2013. The prototype was introduced a few years ago as a small research project to gauge interest and usage as well as test a proof of concept with the RTCM communities. However, due to low usage of this prototype service and staff limitations within the National Geodetic Survey, we have decided to discontinue the prototype. There were many contributing factors that lead to this decision but the following recent series of events has had a significant impact on project support and operations:
— Funds were cut due to sequestration and rescission
— Upcoming furloughs will impact all National Geodetic Survey Personnel
— A NOAA-wide hiring freeze is in effect
— Our only real-time expert will retire on April 30, 2013
If you have any questions or comments to share, please contact Neil Weston at 301-713-3191 or by email – [email protected].
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I think the action was premature. Hardly anyone knew about the CORS Streaming service and it was only deployed in a small number of locations, which was not enough to cover a significant geographic area or major metro areas.
Nonetheless, I think this action points to bigger problems at the NGS. To all of us in the U.S. (and those in other countries), the NGS has been a tremendous source of GNSS technical expertise, products and services. The problem is that they are losing expertise at a faster rate than they are gaining. Just in the past few months, Dave Doyle and Bill Henning have both retired. Those two were a big part of the NGS user community outreach “boots on the ground” effort.
Furthermore, as the notice indicates, NGS’s only “real-time expert” (Bill Henning) is now retired. That’s a problem. As real-time, high-precision GNSS is gaining traction quickly in industries beyond surveying and engineering, the resources for NGS to support this trend should also expand, not contract. On the other hand, the use of GNSS post-processing is not increasing, yet NGS has loads of resources allocated to support post-processing. As technology trends shift, resources need to be redistributed in alignment with those trends.
The Future of NDGPS Open for Public Comment
The U.S. NDGPS program is on the chopping block again. However, this time it’s much more serious. The last time this issue surface was in 2007 when funding for some of the NDGPS sites was being threatened. At that time, only some of the inland sites were facing decommissioning. The U.S. Coast Guard DGPS part of NDGPS was safe and funded.
However, that’s not the case this time. Even the U.S. Coast Guard is starting to question the value of the DGPS system it created and has been using for more than 15 years. The FAA’s WAAS (Wide Area Augmentation System) has proven to be a viable alternative to NDGPS and is used by thousands of sport mariners and commercial marine pilot associations across the U.S., as well as high-precision users in GIS and surveying/engineering. To further complicate the issue, the use of GLONASS is not supported by NDGPS. Like what we’ve seen in high-precision surveying/engineering receivers, GLONASS is becoming an important feature in receivers used by commercial mariners who have to deal with terrain and structures that impede satellite visibility. Even though WAAS doesn’t support GLONASS, some newer GNSS receivers are able to integrate GLONASS data into the WAAS solution, further increasing the value of WAAS over NDGPS.
It’s likely that you aren’t an NDGPS user, but you might still be affected if the NDGPS is decommissioned. There are a total of 86 NDGPS stations across the Continental U.S., Alaska and Hawaii. As well as being NDGPS signal broadcasters, they are also part of the NGS CORS program that is used by the NGS’s OPUS online post-processing service. If you are using OPUS or NGS CORS for post-processing, you might be using NDGPS CORS data and not realize it. Following is a map of all NDGPS stations in the U.S.:
U.S. NDGPS coverage map.
If you’re interested in reading an explanation from the U.S. Coast Guard and Department of Transportation about the request for public comment and submitting a comment, click here. To be considered, comments must be submitted by July 15.
Trimble has introduced a new version of its office surveying software — Trimble Business Center Software version 3.00. Trimble Business Center Software version 3.00 is a powerful, next-generation surveying office software suite designed to manage, analyze and process all field survey data, including optical, GNSS and imaging data.
The new version features photogrammetry enhancements, including the ability to process images from the Gatewing X100 unmanned aerial system (UAS). These enhancements provide surveyors with increased visualization and processing capabilities, allowing them to further maximize productivity and create aerial survey deliverables.
“Powerful and intuitive, Trimble Business Center and its integration with UAS data introduces new capabilities to surveyors and represents a significant leap in efficiency. Surveyors, engineers and geospatial data managers can increase their productivity, efficiency and quality of deliverables through the software’s aerial data processing capabilities,” said Erik Arvesen, vice president of Trimble’s Survey Division. “Traditional sites, such as large mines, that in the past have taken days to map using conventional methods can now be accurately modeled in just hours.”
Version 3.00 introduces a new photogrammetry module for importing and working with flight data and images collected from the Gatewing X100 UAS and optical instruments, such as the Trimble S8 with Trimble VISION technology, which integrates calibrated digital cameras to collect survey data, stream video from the perspective of the instrument and capture panoramic still images. Based on software from Inpho, the Trimble Business Center photogrammetry module also provides office surveyors with the capability to process complete mapping projects containing aerial data, GNSS and total station observations. Surveyors can produce deliverables, including georeferenced orthophotos, 3D point clouds and digital surface models directly from Trimble Business Center.
With the ability to integrate photogrammetry with data collected from GNSS receivers, total stations, and digital levels, surveyors can combine aerial images with GNSS measurements on ground control points and 3D laser scans of buildings to precisely, comprehensively and efficiently map large and complex sites.
The new version also introduces 64-bit processing. As a 64-bit application, Trimble Business Center allows surveyors in the office to utilize their computer’s RAM, maximizing the productivity of the surveyor’s workstation, to display large images and point clouds for increased visualization functionality. Users can also display large images seamlessly; images “tile” automatically on import and the displayed resolution adjusts seamlessly as users zoom in and out for superior image viewing.
“Inpho is a proven leader in digital aerial photogrammetry,” said Arvesen. “Trimble has taken that expertise and applied it to the survey market, as we pioneer the development of UAS data integration for surveyors.”
Spatial Energy has signed a partnership agreement with Geoimage, headquartered in Brisbane, Australia. According to Spatial Energy, the partnership will build capacity and expand access to greater spatial content within the oil and gas industry in Australasia, enhancing the capabilities of Australian customers who operate nationally and globally and allowing them to derive more value from their existing and new geospatial datasets.
Spatial Energy provides, hosts and disseminates spatial imagery and derived content to the oil and gas industry through its online system Spatial on Demand. Geoimage is a provider of satellite imagery and processing services to the mining, oil and gas, and engineering sectors in Australia. Through this partnership, Geoimage augments its existing capabilities by providing Australian customers with the hosting and dissemination technologies that Spatial Energy brings, offering local expertise and services to global customers operating in the Australian region. This will bring new products, capacity and technology to the Australian energy sector, allowing customers to extract even more benefit from their imagery and derived spatial data layers, the companies said.
“By bringing together two culturally and technically similar organizations to better service the energy market in Australia, Geoimage and Spatial Energy will better meet the needs of both our customers. We are very excited to introduce the Spatial on Demand online hosting and delivery facility to Australian customers,” said Wayne Middleton, CEO of Geoimage Pty Ltd.
“By offering new technology, services and high value content coverage globally and for Australasia, we see our partnership providing both of our customer bases with better services, and increased content, access and collaboration capabilities to help them solve their exploration and production challenges,” said Michael McCarthy, Vice President Corporate Development of Spatial Energy.
In the early hours of May 15, Galileo’s first full operational capability (FOC) satellite left the manufacturer’s integration hall in Bremen, Germany. The satellite, assembled by OHB System AG, is now headed for Noordwijk in the Netherlands, where it will undergo an environmental testing campaign and further system testing at the ESTEC’s Test Center on the premises of the European Space Agency (ESA).
Before the satellite was shipped, it had successfully completed integration and system testing, according to OHB System.
The first Galileo FOC satellite. (Photo credit: OHB System AG.)
Its twin FOC satellite is in the final phase of completion at OHB System. Over the next few weeks, it will also be integrated and tested, after which it will be shipped to Noordwijk. The two satellites are to be placed in orbit on board a Soyuz launcher, which will is planned to lift off from Kourou in French Guyana this fall.
These two satellites are the first of a series of 22 Galileo FOC satellites manufactured by OHB System and its industrial partners. The FOC phase of the Galileo program is managed and funded by the European Union. The European Commission and ESA have signed a delegation agreement by which ESA acts as design and procurement agent on behalf of the commission.
At ESA’s test center, thermal vacuum testing will simulate the temperature extremes the satellites must endure in the airlessness of space throughout their 12-year working lifetimes. Without any moderating atmosphere, temperatures can shift hundreds of degrees from sunlight to shadow.
Other activities on the schedule include shaker and acoustic noise testing — simulating the vibration and noise of launch — as well as electromagnetic compatibility and antenna testing, placing the satellite in chambers shielded from all external radio signals to reproduce infinite space and check that its various antennas and electrical systems are interoperable without harmful interference.
Each satellite will offer the full range of Galileo positioning, navigation and timing services, plus search and rescue message relays, their accuracy ensured by on-board atomic clocks kept synchronized by a worldwide ground network.
“The Galileo FOC satellites provide the same capabilities as the previous IOV satellites, but with improved performance, such as higher transmit power,” explained Giuliano Gatti, head of the Galileo Space Segment Procurement Office. “They are to all intents a new design that requires a full checkout before getting the green light for launch. By fully validating this satellite, the second flight model due to follow it here at beginning of June, and the third one due to arrive in ESTEC at middle of July, we gain full knowledge of their characteristics, and the further satellites in the series will require less rigorous functional testing.”
Presentation to the 11th Meeting of the PNT Advisory Board
The following is an abbreviated transcript of Don Jewell’s briefing to the PNT Advisory Board at its meeting on Tuesday, May 7. The slides from Jewell’s briefing and the other briefings to the board are available at pnt.gov under the heading 11th PNTAB meeting.
First, a prefatory note from Don Jewell:
Author Sets the Scene
The old adage “A picture is worth a thousand words” certainly applies to the atmosphere of a PNT Advisory Board meeting. And in this case, so does the oft repeated and entirely inadequate phrase “You had to be there.”
The atmosphere of an Advisory Board meeting is extremely dynamic. You have a very distinguished board of PNT subject-matter experts who are very passionate about their areas of expertise. Some, like Drs. Parkinson and Schlesinger, the co-chairs, have been involved with PNT and GPS matters for 45 years or more. Therefore, the danger of an abbreviated transcript of an emotion-filled briefing is always unsatisfactory at best, because you miss the give and take, the repartee of experts that have invested much of their lives in this arena. So it is important that the reader understand the context of the questions and answers and sidebar conversations that took place before, during, and after the briefing, to put it in context.
It would be easy after reading this transcript and others during the meeting to put the blame for antiquated PNT equipment on the manufacturers. But nothing could be farther from the truth. The truth is, the culprits here are numerous but identifiable. They are:
1. Outdated government regulations, directives and procurement/acquisition procedures that seriously hamper equipment manufacturers from doing their best and updating equipment as necessary.
2. Timelines that totally ignore the dynamics of Murphy’s Law — a law of ever-shrinking timelines battling a glacial process of ever-increasing requirements bounded by antiquated procurement procedures and fiscal indecision.
In the case of military user equipment (MUE), the warfighters, first responders, and government users are the unfortunate recipients of this morass of near-pandemonium and downright confusion. Dynamic and critical user requirements are sacrificed upon the altar of “the program of record” and an agonizingly glacial government bureaucracy. Be assured that the “program of record” delivered exactly what was asked for by the original RFP and subsequent contract award.
Take Rockwell Collins for instance. Rockwell is a great company, building rugged, reliable, precision instruments. I have flown with Rockwell communications and aviation equipment in various aircraft cockpits for the last 40 years, and they are indeed the gold standard in that arena. Rockwell has been delivering GPS military user equipment since 1978 and the company has always delivered exactly what was asked for. The problem is that the operational and refresh cycle for government user equipment needs is inside the acquisition cycle, and unfortunately exceeds it by a factor of ten — hence Murphy’s Law.
The Defense Advanced GPS Receiver (DAGR) was an excellent device when conceived and was the only game in town as regards jamming and spoofing environments. I am confident that Rockwell would have continuously updated the DAGR and made it relevant today, given the opportunity, which they were not.
In my opinion, government regulations in the area of user equipment, especially electronics and highly dynamic technological areas, need to be drastically altered to follow the aircraft procurement cycle. For example, there are probably 50 or more different block versions of the F-16 aircraft, that in truth are radically different. In some respects the “Block 1” F-16 resembles the capabilities of the “Block 50” version only in that it is an airborne vehicle with wings, engine, and a fuselage. Electronically and technically, it is a totally different aircraft. But the contracts for General Dynamics and now Lockheed Martin were not recompeted every time the user requirements, and hence the capabilities of the F-16 changed. I hope you all agree that would be ludicrous — and yet that is exactly the situation with MUE. When the scope changes, the contracts are painfully and laboriously recompeted, with lag times that make the process laughable — if indeed it were not so sad.
Then there is the government’s serious lack of information and training concerning MUE devices. I have been around GPS user equipment for 35 years and yet I am sure I still do not understand all the capabilities of the Precision Lightweight GPS Receiver (PLGR) and DAGR. Imagine how befuddled a young warfighter becomes when given the devices and only a cursory amount of training, that is not only inadequate but sadly many times misleading or just flat wrong.
In our interviews we founds trainers — those that taught warfighters how to use the PLGR and DAGR — who were not aware the unit could be “keyed” or encrypted for greater accuracy. Of course we also found excellent trainers, but they were the exception to the rule. Who trains the trainers?
Although it sounds trite and seems to be a copout, don’t blame the equipment manufacturers for the current state of MUE. Blame the system and then get involved and help us change it to what it should be.
Good morning, everyone.
A special thanks to Jim Miller, Dr. James Schlesinger and Dr. Bradford Parkinson for inviting me to speak this morning on the future trends of PNT user equipment, particularly as it pertains to warfighters and first responders — certainly a subject I have been passionate about for only…oh, let’s say about 35 years.
Why GPS World?
Ever since the agenda for the PNT Advisory Board meeting appeared online, I have been receiving emails and phone calls asking why I was speaking not as one of the IDA (Institute for Defense Analyses) subject-matter experts on GPS but as the Contributing Editor for Defense for GPS World. Frankly, the answer is simple. Wearing the GPS World hat gives me the freedom to say what needs to be said today, whereas the IDA think tank attribution and publication rules, which are absolutely necessary for an FFRDC (Federally Funded Research and Development Center) to operate effectively and efficiently, would unduly restrict my comments.
Plus, for 21 years GPS World magazine has been the publisher of the definitive GPS user equipment survey for global users. It’s free for everyone to use, and it covers PNT receiver information from 55 global manufacturers with data on all aspects of 502 PNT receivers. And it is a great boon for me personally, as I only receive on average about 50+ emails or letters per month from users simply wanting to know what GPS/PNT receiver they should purchase. It is wonderful to be able to point them to the GPS World Receiver Survey.
Also wearing my GPS World hat, I can easily refer to the several thousand warfighter and first responder inputs we have received over the last 10 years — generally expressing what they would like to see in a GPS/PNT receiver or sometimes specifically the Perfect Handheld PNT Transceiver (PHPNTT), which I first wrote about six years ago (and most recently in December) in GPS World magazine.
Top 10 Warfighter – First Responder Requirements for the PHPNTT
Adhering strictly to the latest fad in government briefing formats, it is now time for me to BLUF, or give you the Bottom Line Up Front. However, being a journalist, I also have to hold something back for the end. So here are the top 10 PHPNTT requirements, in order of preference, as submitted over the last 10 years by thousands of warfighters and first responders:
Mil-Spec rugged – solid state drive – no moving parts
Friendly, intuitive, familiar interface – easy to use
Multi-GNSS – All signals available – space and terrestrial
SWAP friendly, long battery life, with solar charger
Real-time 3D map data, NGA, Google, satellite imagery
Not a stand-alone PNT device
Embedded in a computer with multiple communication capabilities – one must be secure
Must be able to download, store and utilize new applications
Software-defined and expandable
Act as a sensor with automatic reporting
All these “user requirements” are closely related to what our warfighters and first responders don’t like about the current GPS MUE or Global Positioning System Military User Equipment. I state that specifically because, make no mistake about it, the current MUE is strictly GPS-based. However, the current MUE only receives two of the many signals available today on the GPS SVs, and certainly not any of the other numerous PNT (position, navigation and timing) signals also available, which of course is the crux of the issue for user equipment of the future.
Most of the top 10 requirements, and there were more than 50 requirements identifiable in all, are self-explanatory, and time does not permit me to cover them all in detail. But bear with me for a couple of quick explanations. Certainly the rugged requirement is readily understandable, and there are numerous manufacturers around the globe today that make excellent Mil-Spec rugged devices. However, the one I am most familiar with and have been extremely happy with are the rugged units from Trimble Navigation produced in Corvallis, Oregon. Trimble also happen to be a certified SAASM (Selective Availability and Anti-Spoofing Module) supplier as well. More on those units later.
The second bullet concerns the human-machine interface on the current MUE, which is so poor that a Marine three-star wrote me a few years ago to say that in his opinion, “If anyone wants an example of how not to design an operational equipment interface then they should refer to the PLGR or DAGR. Both are consistently and sufficiently horrendous, in my opinion.” I could not have said it better. The PLGR and DAGR use the gold standard for PNT as a signal, but the human-machine interface (HMI) is, in my opinion and in the opinion of thousands of warfighters, so antiquated and non-user friendly as to be almost unuseable. However, the units do work well and provide outstanding signals when embedded with other equipment. They just do not work well as a handheld device. The other items on the list we will cover as we proceed through the briefing.
GPS MUE Historical Perspective
I have been involved with GPS user equipment for the last 35 years, and this behemoth of a receiver was my first unforgettable encounter.
Yes, this huge device is GPS user equipment. Can you imagine? It weighs more than 300 pounds, without the two operators, and was the very first workable GPS receiver produced for the U.S. military by Rockwell Collins, who has been producing GPS MUEs ever since. Which is an example of the prodigious acquisition issues that also need to be addressed, or corrected, if you will. Our antiquated acquisition practices are to blame for many of the failings in MUE equipment today. While I feel it is critical to mention this as a major contributing factor to the state of MUE today, it is also a story for another time.
Other than being the first GPS MUE, the significance of this huge receiver is that in my estimation it is the first and last time the U.S. military possessed a purpose-built military GPS receiver clearly superior to the products being produced by commercial and civil manufacturers for global users.
First Significant Usable and Transportable GPS Civilian Receiver
Fortunately, a good friend and colleague, both at IDA and ION (Institute of Navigation), Philip Ward, came to the rescue of all GPS users in 1981 when he delivered the TI 4100 NAVSTAR Navigator Multiplex Receiver.
The TI 4100 was indeed the first commercially viable receiver that could be considered a transportable by anything other than an aircraft. To be historically correct, there were some backpack models that were very short-lived and not as significant as the TI 4100. The main unit and two antennas weighed approximately 50 pounds and showed promise in station wagons and helicopters. I can see a few folks in the audience smiling, so I will reiterate that the TI 4100 was a significant milestone, both in SWAP (size, weight and power), accuracy and TTFF (time to first fix). TTFF was 15-20 minutes in search mode, however; after the four SVs were located and the unit was initialized, it could consistently present a fix location in just a couple of minutes. Plus, the TI 4100 was immune from most jamming signals of the day — an impressive receiver and accomplishment for 1981.
Evolution of Commercial GPS/PNT UE
Fast-forward several years and the following picture presents a view of how quickly GPS UE developed.
The first unit on the right in the above photo is a Trimble unit that was about the same size as the TI 4100, but considerably more capable. As you follow the units around counter clockwise, you will see that they decrease in size and weight, but what you can’t see is that they also increase incredibly where acquisition and processing speed (TTFF), accuracy and capability are concerned. Note also that you start to see stand-alone units that appear to be antennas with separate handheld display units. This is a feature the commercial manufacturers incorporated over 20 years ago, and in some respects a feature the MUE manufacturers and services are just now considering.
Note also the Garmin GPS wrist receiver (right), which until 2005 was the most prevalent civil receiver in both of the wartime AORs (Area of Responsibility). Compare this Garmin wrist unit to the 300-pound Rockwell Collins unit I first showed you and consider that where SWAP and performance are concerned, the wrist unit is hundreds of times more capable and portable.
Current MUE – Program of Record and the Future
The pictures below depict the current MUE – Program of Record equipment, again both manufactured by, you guessed it, Rockwell Collins. First is the PLGR or the Precision Lightweight GPS Receiver. Second is the DAGR or Defense Advanced GPS Receiver. The third unit, known simply as the “Puck,” is what the U.S. Army would like to field in the next couple of years along with that separate display unit I spoke of earlier. Starting to sound very commercial, right? By the way, the Puck measures only 2 x 2 x 1/2 inches and weighs just a few ounces.
Between the PLGR, which was decertified by the Marine Corps in 2010, and the DAGR, there are approximately 500,000 of these MUE devices fielded today, and yet almost none of them are utilized as handhelds. Our research shows that indeed only 1 in 40 is used as a true stand-alone handheld. Most DAGRs are primarily used to interface with legacy communications equipment, primarily U.S. Army, that calls for fire support, read ordnance, and all the others are either stored or embedded with other equipment, which means the “horrendous user interface,” a common warfighter description, is not a major issue. The bottom line is the DAGR is very good at what it does, it is just that what it does (warfighter quote) “…stopped being functional, when compared with other more capable PNT equipment, almost the day is was delivered to the AOR in 2005.”
While the Puck is certainly a major improvement in SWAP and concept, it essentially provides the same two GPS signals and SAASM capability as provided by the DAGR, just in a smaller form factor, and it does away with the continuously vilified user interface. The Puck technology totally ignores current-day PNT, multi-GNSS platforms and the other 160 PNT signals available today. Review the GPS World 2013 Receiver Survey and you will only find a handful of receivers that are so incredibly limited, and they are invariably produced, you guessed it, for the U.S. government as part of a GPS program or alternate program of record.
MUE: How Not to Build a PNT Device, or Why Warfighters Use Garmins and iPhones
The list you are looking at now is comprised of the first 15 minutes of conversation with thousands of warfighters interviewed over the last 10 years — they just had to tell us what was wrong with the current MUE before they finally got around to telling us what, if they were king or queen for a day, they wanted to see in the PHPNTT. This is not my opinion but the actual words of the warfighters. First of all, understand that the PLGR is a single-frequency GPS-only receiver with a security module (PPS-SM) to access encrypted P(Y)-code for anti-jam purposes. It was initially fielded 1990-2004, replaced by the DAGR in 2005. There are approximately 165,000 PLGRs and 450,000 DAGRs fielded at a cost of more than $1 billion. Now the warfighter comments:
Both the PLGR and DAGR have an antiquated, proprietary OS and “extremely unfriendly — non-intuitive” user interface.
PLGR and DAGR are not functional as handheld units but function well as embedded devices — although typically not networked, and we are not even sure they can be networked.
Example: One STRYKER vehicle variant has nine separate DAGRs incorporated, each with its own antenna and operating totally independently of the others.
PLGR was decertified by U.S. Marine Corps in 2010 due to friendly-fire incidents.
DAGR used today primarily as embedded device only with a “ horrible user interface”:
Monochrome screen, no active maps, navigation direct waypoint only. Provides user with PNT information as coordinates — requires paper map to be an effective tool.
For other than straight-line navigation — time, distance and ETA are incorrect.
Programming/mission planning require special cables, software and a laptop computer.
Additional cables, radios and hardware are required for PLGR or DAGR to communicate.
Proprietary OS — no capability for additional programs to be added or utilize.
SWAP issues — large, heavy, limited battery life (multiple batteries) for typical missions.
TTFF — warm, approximately 2 minutes; cold with almanac download, 30+ minutes.
Position accuracy expressed as PDOP (1-6) on separate screen from PNT data. Nominal accuracy of a coded DAGR is typically about 1 meter or more.
Advantages: Anti-jam and legacy interface capabilities.
So, the bottom line as far as the warfighters are concerned is that if you want to operate legacy equipment that requires a GPS input, such as calling in “fires” or artillery or if you are in a jamming environment, then you need the DAGR or its capability. Our survey shows, however, that only 1 in 40 use the DAGR as a handheld, and yet every single one of our respondents — that’s 100 percent, a rarity in statistics — stated they had a backup unit, primarily a Garmin, until 2005, and then popular backup units were more than likely an iPhone, iPad or Trimble unit.
One of the Most Popular PNT Devices in Theater Today – More than 365M Sold to Date
Today there is no question concerning the most prevalent PNT unit in both AORs. It is, you guessed it, the Apple iPhone and/or the Apple iPad. Let’s take a brief look at the capabilities of this non-ruggedized but still amazing device, which can easily be made Mil-Spec rugged with aftermarket cases and enclosures such as those produced by Otterbox, which I have personally tested and reviewed numerous times.
The attributes you see listed here are for the iPhone and iPad, and are those that assist in some aspect of PNT and/or integrity and accuracy.
Assisted GPS SBAS — WAAS (PNT)
Assisted GLONASS — (SBAS) (PNT)
Digital compass (PN)
Wi-Fi (Communications-Data + PNT)
Cellular (Communications-Data + PNT)
Bluetooth (Communications-Data + PNT)
Skyhook Wireless (PNT)
Three-axis gyro (PN)
Accelerometer (PN)
Pedometer (PN) – Application
Internet (Communications-Data) Skype application (PNT)
Real-time accuracy and integrity representation (PN)
361+ navigation applications in the App Store ready for instant download and designed for iPhone and iPad. The majority of these applications are available at no cost to the user.
All this capability available in just four ounces — truly a SWAP and capability revolution.
Apple logo
Of course, what really makes the list of iPhone and iPad capabilities revealing is that the first two attributes alone more than double the number of PNT signals received and utilized by the iPhone versus the DAGR, and that number does not account for the GPS L2C (second civilian signal) and L5 (DOT safety of life signal) with CNAV, which when activated will be the strongest GPS signal broadcast to date. The CNAV data is an upgraded version of the original NAV or navigation message. It contains higher precision representation and nominally more accurate data than the nominal NAV data. There are 26 more PNT satellite signals available today in the iPhone and iPad, and they are comprised of multi-GNSS signals and augmentations. The kicker for me is that in addition to all the additional space signals are terrestrial signals, and almost any map or grid system the user desires. Plus there are apps (software applications) that translate between grid systems. And if you don’t like the interface of the navigation program you are using, then there are literally 360+ other choices. I also find the pedometer function interesting, in that firefighters now use this capability along with the Blue Force Tracking app in buildings when they are momentarily without GPS, GLONASS (Russian GNSS), WAAS (U.S. Wide Area Augmentation System), EGNOS (European Geostationary Navigation Overlay Service) or other SBAS (Satellite Based Augmentation System) signals.
Realistically, to defeat the current unencrypted MUE today, an adversary only has to jam one GPS signal, but to defeat the iPhone or iPad an adversary has to jam all the GPS signals, all the GLONASS signals, all the Wi-Fi signals, all the mobile 3G and 4G CDMA and GSM (read as different mobile telephone systems) signals and still the iPhone or iPad will use the accelerometer, gyro, compass and pedometer functions to determine position. Indeed, it will continue to function as a PNT device. All this in just four ounces at a cost about one-sixth of the DAGR displayed on a screen that has 100 times greater resolution and is in color. Remember, the DAGR has a monochrome screen. No contest. Plus try saying, “Take me home, Siri” to a DAGR and see what happens.
Garmin
What about Garmin, you ask? At the beginning of the current conflicts, Garmins were the prevailing additional PNT device. There are still thousands of them in theater, and they have saved many lives, as we will see. However, just look at this sales chart for smart PNT devices.
ProductsTotal Units Sold (approximate)
iPhone (since 2005) 250,600,000 (M)
iPad (since 2010) 115,000,000 (M)
Garmin Sales ~100,000,000 (M)
iPhone/iPad App Store (since 2008)
Downloads of the 361+ navigation apps 2,200,000,000+ (B)
(Note: Total App Store downloads will exceed 50 billion by the time this is published.)
The Future
The future of PNT devices globally, especially for warfighters and first responders, is clearly with rugged mobile devices capable of downloading, storing, updating and utilizing applications. The Garmin cannot do that, although it can be updated, and just look at the numbers. Garmin started business as a GPS device provider in 1989. In that time, while branching out into marine and aviation devices, some of the best in the world for those purposes, they are still primarily GPS only (with SBAS). They have sold approximately 100M devices in 24 years compared to Apple’s iPhone and iPad numbers, which total more than 365M devices in less than eight years. The iPad alone outsold all Garmin products in just three years. I confess that I happily own several Garmins, think that are fantastic PNT devices, and it is really tough to beat the $99 wrist Garmin. When all is said and done, the Garmin gives you better information in a non-jamming environment than the DAGR. And Garmin units are still saving lives. Take this vignette from SSG Kyle Dorsch:
“My name is SSG Kyle Dorsch…a Reconnaissance team leader in the 2-30 Infantry Battalion, 10th Mountain Division, deployed to the Logar province, Afghanistan. I have used my Garmin eTrex Vista H throughout my deployment…it has been a lifesaver in more than a literal sense. In fact, there isn’t a leader in our establishment without a Garmin product…my Garmin guided me and my four-man team seamlessly through some of the toughest areas of Afghanistan…it also literally saved my life.”
SSG Dorsch goes on to explain that the eTREX, which was placed strategically on his combat vest, actually stopped an enemy bullet meant for him, and just like Timex the eTREX kept on ticking.
My Obligatory Caveat
Note that SSG Dorsch has always had a Garmin with him in theater and indicates that his leadership has as well. There is no doubt the eTrex saved his life, literally. However, I would never tell a warfighter to not use their government-issued MUE. In a severe jamming environment, it may prove to be a lifesaver, and it may be the only equipment that interfaces with legacy communications and fire support equipment. Take that advice for what it is worth today, because hopefully this will not be the case much longer.
DARPA and Smart COTS Devices on the Battlefield Now
DARPA (the Defense Advanced Research Projects Agency, the real inventors of the Arpanet and the Internet), a much-storied DoD research arm, launched an effort recently called “Transformative Apps.” It developed a few dozen smart applications that work on a number of mobile devices. In addition to mapping, navigation and smart routes, the apps identify explosives and various weapons, and help navigate and locate parachute drops.
A screenshot of the DARPA Smart Routes application. The green routes are safe routes and the red are routes that have been traveled too many times or indicate where problems may exist.
DARPA builds prototypes that are transferred to the Services and become official applications used by hundreds of thousands of warfighters. The challenge is to rapidly adapt COTS (commercial off-the-shelf) technology to the unique circumstances of the military, which often operates over large, hostile areas with little to no formal communications infrastructure.
DARPA reports that more than 1,000 war fighters in Afghanistan now use the DARPA Transformative Apps technology as it continues to be rolled out to the Services.
The most interesting aspect of DARPA’s participation in PNT software is that it will definitely accelerate the multi-GNSS and all-signals-available scenario, because it is not constrained by woefully out-of-date DoD regulations. DARPA does what is smart, what cutting-edge technology will support, what makes sense, and ultimately what saves lives.
The U.S. Department of Defense expects in coming weeks to grant two separate security approvals for Samsung’s Galaxy smartphones, along with iPhones and iPads running Apple’s latest operating system — moves that would boost the number of U.S. government agencies [ed. legally] allowed to use those devices.
In my humble opinion, this announcement is simply outstanding…albeit about 10 years late to need. Indeed, Ms. Teri Takai, the current DoD CIO (Chief Information Officer) gest it and is trying hard, but she can’t do all the heavy lifting alone.
Old Adages Die Hard
I remember an old GPS adage that portentously proclaimed, “If it is not supported on the GPS satellite, it cannot be supported in the user equipment.” Unfortunately, there are those still holding to this totally fallacious belief. Today in the current budget environment, amazing capabilities are being implemented with user equipment that multiply the capabilities of the PNT satellite, other satellites and space signals, terrestrial signals and synergistic augmentations. Indeed, the total price of the PLGR and DAGR program combined would barely pay for some NRE (non-recurring engineering) costs and two launches of the GPS III satellites that should be ready for launch in 2014. Today we need to look even harder at what is doable with user equipment, especially in the military, because it is all we can afford. As Winston Churchill was once quoted as saying, “Gentlemen, we have run out of money; now we have to think.” However, having said that, let’s not forget that the multi-GNSS environment has multiplied many fold the number and capabilities of PNT signals on orbit today.
PNT User Equipment TRENDS — Space SIGNALS available
Jim Doherty, USCG Captain retired, and I are friends and colleagues at the Institute for Defense Analyses (IDA). We are both old retired navigators as well. We both still have the skills to successfully navigate an aircraft or ship, for that matter, from San Francisco to Tokyo using only a sextant. While we are proud of that talent or ability, one that very few possess today, we would much rather accomplish the feat with an exceptional multi-GNSS device, and they exist today like never before. These next lists show all the signals that are available today compared to what the GPS MUE can receive and use for PNT purposes. Plus, Jim and I both share a firm belief in another old navigators’ adage: Receive Everything – Trust Nothing!
Civil-commercial multi-GNSS UE receives more space and terrestrial signals than U.S. GPS MUE.
GPS MUE “officially” utilizes L1(CA), L2 P(Y) with SAASM.
There are NO commercially viable M-code receivers available today and there will not be for several years to come.
PNT civil UE philosophy: Track and use all PNT signals available.
GPS L1-CA/L2-codeless and ready for L2C, L5, L1C (GPS III & QZSS)
SBAS (WAAS, EGNOS, MSAS, GAGAN, SDCM) + NDGPS & many other augmentations
GLONASS L1/L2/L5
Galileo E1/E5 (CBOC & Alt BOC)
Compass B1/B2/B3 (carrier signals only- no full signal specifications)
And do not be deceived: there are plenty of PNT receivers available today to receive all these signals and they have existed for some time. Equipment manufacturers have been ready to receive, process and utilize all the GPS and multi-GNSS signals for years. For example, Trimble built and shipped an L2C receiver in 2003, and that signal has still not been activated on any U.S. GPS payloads although, as we heard from Major General Marty Whelan (USAF – AFSPC/A5) earlier today, General Shelton (USAF), the four-star commander at AFSPC (Air Force Space Command) has announced a six-week test of the L2C signal and full CNAV message in June of this year. A great step forward.
One of these days we might even catch-up with the Japanese – more on that in a moment.
Trimble built and shipped receivers for GLONASS signals in 2006, even though GLONASS did not reach FOC or Full Operational Capability until late in 2010. A designation it is having serious problems maintaining. Trimble also ships L5 receivers as well as commercial SBAS receivers that result in extremely accurate and reliable positions. Lest you think all these signals have gone to waste, remember that Japan’s QZSS-1 broadcasts both L2C and L5 with a full CNAV message today, and the Trimble receivers and others with the multi-GNSS capability work well with those signals, as we shall see.
Global Virtual Reference Stations
Trimble (VRS) and John Deere (StarFire) PNT receivers have the capability Trimble has designated as Global Virtual Reference Stations, which — along with real-time kinematic (RTK) processing — provide users with an unprecedented number of signals and a real-time processed signal with corrections. This results in centimeter-level accuracy for any of their receivers that have the capability to receive and process the signals. For both manufacturers, that will soon be almost all of their receivers. Sure, there will probably be a small monthly fee involved, but the accuracy difference between 1 meter (~3 feet) and 3 centimeters can mean life and death if you are unlucky enough to be in the collateral damage zone or in the sights of a Hellfire missile during war time.
Multi-GNSS SVs and Signals in View
To highlight this point, just glance at the following graphical log file generated by software in the latest Trimble Multi-GNSS PNT receiver. The chart depicts a log file from a receiver located in Singapore. The location is significant only because in that location the receiver is in full view of the Japanese QZSS-1 PNT SV and all its extra U.S. originated PNT signals (L2C & L5) mentioned earlier. This particular Trimble receiver is networked and reports results automatically and continuously to a web page, while receiving GVRS updates and corrections plus other PNT information, such as an updated almanac, over the same network. The question becomes, is it a PNT device with a computer and embedded communications? Or is it a computer with communications and an embedded PNT function? You be the judge. Regardless of which you choose, this is the future of PNT and MUE.
This civil receiver reports 40+ SVs with 169 separate signals in view and usable. This does not count the number of Wi-Fi and/or GVRS signals it is capable of receiving. Meanwhile, a GPS MUE receiver in the same location only observes a total of 10 SVs it can process for a total signal count of 20. However, one of the key points on this log depiction has to do with integrity. Notice the orange and red lines. They indicate that the receiver has labeled these signals as “suspect” and has automatically dropped them from the solution for any of a host of reasons — a failed integrity check, jamming, spoofing, wrong way path, a runaway clock, etc. You name it, and if it is suspicious, the receiver will drop that SV and its signals from its PNT calculations. Built-in integrity.
The obvious question becomes just how accurate is this Trimble receiver over a 24-hour period? The next graphical log file denotes that it is accurate within 3 centimeters.
Trimble multi-GNSS receiver web page log file denotes continuous availability of PNT signals with an average accuracy of 3 cms.
Assured PNT
When we asked warfighters what was more important to them in a combat zone — availability or accuracy of the PNT signals, the answer was, not surprisingly, both. But, of course, they need to receive the signal first, and then they can worry about accuracy.
So, if you were Ms. Teri Takai and you were worried about “assured PNT,” would you rather do that with 20 signals from 10 SVs or 169 signals from 49 SVs and some very strong, difficult to jam, terrestrial signals as well — adding up to, on average, 33 times more accuracy than the GPS-only signal? To me, the answer is obvious. And of course, all that is on the line with every mission the DoD performs, as is the safety of our critical national infrastructure as this next chart depicts.
Assured PNT or lack thereof impacts all missions, across all platforms and domains
Assured GPS MUE PNT today depends on:
L1(C/A), L2 P(Y), SAASM (Future M-Code)
Accuracy ~ 1m
Assured Multi-GNSS MUE PNT with all signals available depends on:
GPS L1/L2/L5/L1C/L2C/M-Code/SAASM
SBAS (WAAS, EGNOS, MSAS, GAGAN, SDCM+)
GLONASS L1/L2/L5
Galileo E1/E5 (CBOC & Alt BOC)
Compass B1/B2/B3
QZSS GEO – L1 CA/C/SAIF, L2C, L5, LEX Pilot
Two-way communications, Networking, PNT servers, each PNT device with unique IP address and each PNT device serves as a sensor
Software definable devices
Multiple software applications (Apps)
Accuracy ~ 3 cm
Army Making Strides
I spoke above about DARPA getting into the PNT business, and that is a good thing. But how about the largest military user of PNT, the United States Army? The U.S. Army is making some interesting changes as well. The Army announced a few months ago that there would be no more purchases of DAGRs, and that it was pursuing smartphones as a communications and small computing platform as well as an alternate PNT tool and display device. This is where the Puck comes into play.
While it is a wonderful idea I fully endorse, the problem with the Puck is that under the current design scheme it will still only transmit the current two GPS signals to a smartphone or other PNT display device. And warfighters lament that it is another device run by batteries for which our warfighters need to carry spares. Why not make the Puck a multi-GNSS device? we asked. The answer we received is that it would make it too power hungry and just require more batteries. So to misquote Shakespeare “…for want of a battery, the war was lost?” The Army is definitely on the right track, but they need to figure out how to make the Puck a multi-GNSS device. Can you say Lithium ION and solar charger – Hoorah!?
The Army Hub
The Puck is moving in the right direction. However, with the addition of another device, the Army is definitely on the right track. This device is designated the “Hub,” and while it is again GPS-oriented, it contains multiple terrestrial and internal signal augmentations and backups, as the image depicts.
With apologies to the U.S. Army, I unabashedly modified the chart, and I made it very obvious. The red text depicts my addition of a multi-GNSS card or module versus or in addition to the CGM (Common GPS Module) and GB-GRAM or Ground-Based GPS Receiver Application Module. The multi-GNSS card/module already exists today. Several PNT receiver manufacturers manufacture it with 28-nm technology versus the 95-nm technology — for the as-yet-unavailable for about four more years if the rumors are correct — GPS-only CGM. For me, the addition seems to be an easy fix, as there is lots of room in the Hub. But this fix or module (CGM) is years and millions of dollars down the road, versus a solution that exist today.
YUMA 2 or Hub or Both
The solution, frankly, is one of the smart tablets available today from numerous manufacturers — seven, actually, that have the wherewithal to produce a secure multi-GNSS device with a SAASM module.
The Trimble Yuma 2.
This is an example of the solution in the form of a Yuma 2 tablet computer from Trimble, which I am in the processing of reviewing for GPS World. The Yuma 2 has all the multi-GNSS features we have been discussing and more, plus it can in time accommodate all the modules scheduled to be incorporated into the Hub. Why build a whole new display device when the core already exists with many more capabilities than were imagined or real estate would ever allow for the Hub? Plus, it is available today as a rugged Mil-Spec device with a full color, high-resolution touch screen. And in the end it will provide a 3-cm solution versus a 1-meter solution. What more could you want? And it is available today with an outstanding and intuitive interface.
Conclusion – Services PNT UE Trends
I have been focusing on the Army today not simply because they are the biggest U.S. military user of PNT devices, but because they are moving in the right direction for the future of PNT and MUE devices. Of course, all the services and many agencies need a well-thought-out and secure PNT solution, and if we have learned anything it is that one size does not fit all. Indeed, our national security and our national infrastructure depend upon future PNT devices. For security purposes alone, they should have a certain degree of application and signal diversity.
Now let’s review:
Army has a way ahead with an assured PNT program.
Includes end of PLGR and DAGR and adding new networkable devices.
Plans for fourth-generation multi-GNSS and multi-function handheld devices and embedded PNT devices as sensors to include the Puck and Hub.
Marine Corps: Decertified PLGRs in 2009 and attempts to limit the use of DAGRs.
DAGRs used primarily as embedded devices.
Purchasing approved SAASM devices from commercial vendors.
USAF: Outfitted 70% of aircraft with modern, integrated, networkable and upgradeable PNT devices.
Navy: More than 60% of the fleet outfitted with modern PNT networked devices.
The Bottom Line is – One size does not fit all but one conclusion is clear – while GPS may and will always hopefully be the Gold Standard – multi-GNSS solutions are the future.
The Future of PNT Devices
This last list depicts the future of PNT as best as I can define it; indeed, as it has already been defined for us by our warfighters and first responders or, as Kirk Lewis would have me say, government users. The users are not waiting around, nor have they bothered to adhere to woefully out-of-date regulations. It is what they desire, and since their lives depend on it, it is what they should have.
Multi-GNSS — Utilize all PNT signals available.
Space and Terrestrial (GPS, GLONASS, eLORAN).
Traditional and non-traditional (Wi-Fi, GVRS, carrier signals).
Multi-function COTS devices with non-proprietary OS (operating System), intuitive interfaces and Mil-Spec ruggedized.
Multiple methods of communications: Wi-Fi, Skype, 4G, text, auto-text, satellite.
Software Downloads – Applications
COTS applications plus .mil apps store.
Networked devices for SA, updates and PNT,
Real-time satellite imagery and mission data injects.
Defense and intelligence LBS.
Each device will be a sensor on a network,
Automatically report jamming, interference and location data.
Utilize SAASM and anti-jam military signals only as required.
Thanks you for your time and kind attention today. And remember, Happy Navigating!
GPS Source, Inc., has released the latest addition to its military product line, a military qualified, in-line GPS amplifier, MA11M.
The MA11M is a military-grade device used to strengthen the signal and reach of GPS. It is designed for GPS conditions where there is a weak signal. This amplifier is designed to work with an external, active antenna, and is primarily for use by military applications (both ground and air) around the world.
“GPS Source realizes the importance of protecting our national assets by designing products that can handle rigorous military environmental demands,” said Robert Horton, CEO of GPS Source. “This amplifier has been qualified for temperature, altitude, explosive atmosphere, humidity, vibration, among many other challenging conditions. The qualifications allow the military to use this device without reservation. Test summaries (MIL-STD-810 and EMI) are available upon request.”
The ruggedized MA11M GPS amplifier is designed with the thin link margins of satellite navigation systems in mind, and is a single-stage gain block that covers the GPS, Galileo, and GLONASS frequencies. The device features 30 dB of gain and excellent gain flatness of less than 1 dB.
Maiden flight trials have been successfully conducted in Moldova using GMV’s magicSBAS solution. These trials form part of a GMV-led European Commission FP7 collaboration project.
In 2011 the European GNSS Agency (GSA) awarded GMV the EEGS2 project (EGNOS Extension to Eastern Europe). The main objective of the project is to demonstrate through flight trials the benefits of the European Geostationary Navigation Overlay Service (EGNOS) in areas of Eastern Europe where it is not yet available, such as Poland, Romania, Ukraine, Moldova and Russia, and to prepare the civil aviation authorities and air navigation service providers for future use of the system.
In the context of this project, after the tests conducted in Spain, the maiden flights have been successfully carried out in Moldova, using the equipment and tools developed by GMV. The Moldova demonstrations have given pilots and service providers a clear idea of the potential benefits of EGNOS and the flying procedures of the near future, GMV said.
Four flights had previously been conducted in Spain in November, December and February. The satisfactory results of these flights then paved the way for the demonstrations in Moldova.
The magicLPVsystem, developed under this project, enables LPV approaches (localizer performance with vertical guidance) to be carried out using the signal generated by the magicSBAS application. This test environment allows any region of the world to analyze the air-navigation benefits to be obtained with deployment of a Space Based Augmentation System (SBAS). This signal is read by Internet and transmitted by radio frequency in the vicinity of the airport, allowing LPV approaches to be made in places where SBAS is either completely unavailable or available only on a very limited basis.
Eight flights in all were carried out in various Moldovan airports, including Chișinău International Airport. Test results were highly satisfactory, demonstrating the simplicity of equipment configuration and operation, and the performance of the magicSBAS signal, GMV said.
“These trials are an important milestone for GMV, for the project and, fundamentally, for the use of EGNOS in the countries of Eastern Europe in the near future,” said Miguel Romay, executive director of GNSS–Aerospace.
GMV will continue with these demonstrations in other countries of Eastern Europe. The next trip in two weeks will be to Romania, where new flights are expected to be just as successful.
iTRAK Corporation, a wireless GPS-based tracking, mapping, and fleet reporting company, has made available its iTRAK Virtual Fleet Support Manager service. This service will allow iTRAK customers to use one or a group of expert iTRAK employees who will help to cost effectively manage many of the functions associated with the iTRAK GPS tracking system and fleet management related logistics. This will free the customer to focus on applying the provided information for better and more efficient use of their fleet, iTRAK said.
This service will provide customers standard or custom reporting, management of alerts and geospatial features such as geofences and landmarks, and monitoring the status of vehicles and tracking devices. The Virtual Fleet Support Manager can also help manage grouping of devices for analysis and supervision by customer associates, reassignment of vehicles, and online review of overspeed and idle alerts, which can help to reduce overall fleet fuel consumption. The professional Virtual Fleet Support Manager (VFSM) team can also help to set up and manage some of the more advanced features of the system, such as maintenance reporting, updates to the cloud-based fleet vehicle or asset database, as well as the online driver database.
Other activities may be requested by iTRAK customers, such as custom tracking, fuel reports, and alerts for maintenance such as oil, tire, and engine maintenance.
Additional reminder alerts such as tag and insurance renewal can also be setup and supported as needed. Regular status reports will be provided to iTRAK VFSM customers; the iTRAK team can also provide additional consulting on how their fleet and tracking technology can be further used to optimize fleet efficiency and reduce overall operation costs.
“Many of the successful fleet based companies we provide services to have reorganized for higher efficiency. As they have subsequently grown many have been lacking the needed bandwidth to oversee or process some of these advanced technical but vital logistical-related activities,” said Craig Gooding, director of sales at iTRAK. “By using our Virtual Fleet Support Manager service, we can help bridge this gap for the customer; while the customer can focus on using the information the system generates in order to help improve their business. They can also be certain that an expert is helping them to use all the features of the system to get the maximum value out of their investment in fleet management information technology. This includes immediate use of new features as soon as they are available.”
The White House Blog announced that President Obama signed an Executive Order directing historic steps to make government-held data more accessible to the public and to entrepreneurs and others as fuel for innovation and economic growth. The Executive Order declares that information is a valuable resource and strategic asset for the Nation.
Under the terms of the Executive Order and a new Open Data Policy released today by the Office of Science and Technology Policy and the Office of Management and Budget, all newly generated government data will be required to be made available in open, machine-readable formats, greatly enhancing their accessibility and usefulness, while ensuring privacy and security.
According to the announcement, during his visit to Austin, President Obama will meet with technology entrepreneurs who are hiring workers with cutting-edge skills and creating the tools and products that will drive America’s long term economic growth. This includes technology entrepreneurs utilizing government data to grow their company. Under the President’s Open Data Executive Order, more data will be made available allowing these types of entrepreneurs and companies to take advantage of this information, fueling economic growth in communities across the Nation.
Through the Data.gov platform, which launched in 2009, users can access government datasets about a wide array of topics. Thousands of datasets have already been added to Data.gov and more than half-a-million data downloads have occurred in the last year alone, and we’re working to make the site even better.
The Blog reports that as part of the Administration’s Digital Government Strategy and Open Data Initiatives in health, energy, education, public safety, finance, and global development, agencies have been hard at work unlocking valuable data from the vaults of government. The Health Data Initiative, for instance, has opened growing amounts of health-related information in open, machine-readable formats. Hundreds of companies and nonprofits have used these data to develop new products and services that are helping millions of Americans and creating jobs of the future in the process.
As part of the Administration’s work to make health care system more affordable and accountable, the Department of Health and Human Services released new data on fees that hospitals charge, a major step in creating greater price transparency.
“We’ve also collaborated with the private and nonprofit sectors through a series of White House datajams and datapaloozas to help spark activity by entrepreneurs and innovators to use open data to build new products, services, and innovations. As a result, there are private companies using open data to fight credit card fraud; consumers using open data to save on their energy bills; families leveraging open data to compare health care options; and a host of new apps and tools in areas ranging from public safety, to financial planning, to education, and more.”
The Blog reports hat many government datasets are still hard to find or are locked-up in unusable formats. By requiring that government agencies provide newly generated government data in machine-readable formats like CSV, XML, and JSON and, when appropriate, expose data via Application Programming Interfaces (APIs), the new Executive Order and Policy will further accelerate the liberation of government data.
An unofficial group of airmen from the United States Air Force (USAF) is climbing the world’s mountains to spread patriotism and pride in the military, and raise funds for military charities. The team has already achieved six of the famed “seven summits” of the world as part of the USAF Seven Summits Challenge. At this moment, they’re pushing toward the final challenge, the summit of Mount Everest.
Taking part is Capt. Colin Merrin, a GPS operator from the 2nd Space Operations Squadron (2SOPS). Merrin and the USAF Seven Summits Team will climb the Southeast Ridge of Mount Everest via the South Col, a route originally pioneered by Sir Edmund Hillary and Tenzing Norgay in 1953.
The seven summits are the highest mountains of each of the seven continents. Climbing all of them is regarded as a top mountaineering achievement.
In the photo above, Merrin is shown standing at Aconcagua base camp in the Andes mountain range in Argentina. His trek up Aconcagua in February 2012 helped prepare him for his Everest climb.
