Trimble today introduced the Trimble BD930 module as part of its GNSS OEM portfolio. This small module features triple-frequency support for GPS and GLONASS plus dual-frequency support for BeiDou and Galileo constellations. Capable of receiving a wide range of commercially available GNSS signals, the 220-channel BD930 takes advantage of all available signals to provide optimal and reliable RTK centimeter positioning.
The announcement was made today at ION GNSS 2013 Conference and Exhibition.
“The OEM and system integrator communities trust Trimble to supply high performance, accurate and reliability positioning solutions for their systems,” said Ed Norse, portfolio manager of Trimble’s GNSS OEM modules. “The Trimble BD930 delivers the latest GNSS technology in an easy-to-integrate form factor for demanding conditions and applications such as high-precision navigation and control, robotics and lightweight unmanned vehicles.”
The triple-frequency Trimble BD930 (measuring 41 x 51 millmeters) is a small, yet powerful GNSS module specifically designed for applications requiring high accuracy in a compact package. Form-Fit-Function compatible with the Trimble BD920 receiver, the module tracks all available GNSS constellations including GPS, GLONASS, Galileo and BeiDou.
The BD930 is designed for all levels of accuracy with an advanced engine that provides GNSS, DGNSS and RTK positioning in challenging environments such as under tree canopy and urban canyons. The BD930 allows for easy integration and rugged dependability. Flexible connectivity options — Ethernet, RS232 or USB — provide fast data transfer and easy configuration via standard Web browsers. External 10 MHz frequency input is supported for advanced applications.
The Trimble BD930 module is expected to be available in the fourth quarter of 2013 through the Trimble Precision GNSS + Inertial worldwide sales channel.
Signal Sentry 1000, an Exelis product that detects and locates GPS interference sources in 3-D by using longitude, latitude and altitude has demonstrated successful results during a planned field testing event held last week at the Vidsel Test Range in Sweden.
Taking advantage of the range’s remote location, Exelis was able to conduct tests of its Signal Sentry 1000 product using controlled jamming. The test was conducted without disrupting the GPS signal relied upon by civilian and military operations outside of the test range location. The test employed eight sensors positioned in an array pattern and showed that Signal Sentry was able to successfully detect and locate the jamming source. Having demonstrating interference detection and location capability, Signal Sentry 1000 can be deployed to collect actionable intelligence for law enforcement and protect GPS signal-dependent critical infrastructures.
Signal Sentry 1000 technology is a network of threat-detection sensors, which is part of a centralized server executing Exelis-developed proprietary location algorithms. These sensors can be strategically located around different types of critical infrastructure, such as shipping ports, utilities and government facilities to automatically sense and locate any intentional or unintentional GPS jamming source. Should a threat be detected, users would receive location information and actionable intelligence in order to determine an interference-mitigation plan.
“Exelis developed Signal Sentry 1000 to help protect critical infrastructure and to deliver intelligence to law enforcement operations that depend upon GPS availability,” said Mark Pisani, vice president and general manager of precision instruments and positioning, navigation and timing for Exelis Geospatial Systems. “Achieving this field test milestone proves that our detection technology works. The next step is to evolve this technology for our military customers.”
Signal Sentry 1000 builds upon Exelis expertise in the field of GPS and positioning, navigation and timing. Exelis payloads and payload components have been on board every GPS satellite for nearly 40 years. Today, Exelis is involved in GPS modernization initiatives, building tomorrow’s GPS III satellite constellation by developing and integrating the navigation payloads. Exelis is also providing navigation processing components, precision monitor station receivers, and key components of the system security design for the GPS Operational Control System, known as OCX.
Rx Networks, Inc., a mobile location technology and services company, today announced a new z-axis determination capability called Zed. This new solution, comprised of a client software library and associated cloud-based data services, is targeted at chipset vendors, device OEMs and application developers seeking to integrate reliable floor-level detection. The announcement came at ION GNSS 2013 in Nashville, Tennessee.
Whether for emergency or consumer applications, the determination of a mobile device’s vertical position while indoors presents unique challenges. Given the environment, even when a GNSS receiver attains a fix, a mobile device cannot reliably use the reported altitude. Beacon-based techniques, such as those derived from Wi-Fi or Bluetooth, remain challenging as they often rely on GNSS-based crowd sourcing or costly venue characterization. The built-in barometric pressure sensors in recent smartphones bring a new ability to estimate altitude, but they have unique and variable characteristics that prevent floor-level accuracy without further assistance.
Rx Networks’ new Zed solution combines accurate geo-reference barometric pressure data (from Custom Weather, a global provider of real-time weather information), automatic device characterization, and pressure crowdsourcing along with existing location services to determine a device’s altitude within 1 to 3 meters.
The Zed solution will be commercially available at the start of 2014 and will be available either on its own, or as an optional feature alongside Rx Networks’ GPStream Assisted-GNSS and XYBRID hybrid location solutions.
For more information a demonstration of Zed, visit Rx Networks booth at ION GNSS+ 2013.
Rx Networks, Inc., a mobile location technology and services company, today announced that it is upgrading its GPStream GRN (Global Reference Network) to include support for the BeiDou and Galileo constellations alongside its GPS and GLONASS assistance services. The upgrade will be completed by the end of this year with commercial service starting in 2014. The announcement came at ION GNSS 2013 in Nashville, Tennessee.
With the official release of the Chinese BeiDou specifications in late 2012 and the rollout plans for Galileo, several semiconductor vendors will soon be introducing chipsets capable of supporting these new GNSS constellations. Multi-constellation devices receiving GNSS assistance data from GPStream GRN will have much greater success in areas where satellite visibility is severely limited, such as urban canyons or indoors, the company said.
GPStream GRN is the foundation on which Rx Networks’ and third-party real-time and predictive Assisted-GNSS products operate, as used by more than 700 million smartphones worldwide. Backed by a 99.999% Service Level Agreement, GPStream GRN is already a proven source of real-time assistance data for most North American mobile operators for their E911 location platforms.
“Our reference network will be the first to commercially support all four constellations,” said Ryan Reilly, Product Manager, “reaffirming our leadership position on Assisted GNSS solutions for the mobile market.”
For more information, visit the Rx Networks booth at ION GNSS+ 2013.
The preview version of Trimble’s CenterPoint RTX post-processing service, enabling GNSS observations using available Galileo and BeiDou MEO satellites.
Trimble announced today a Preview version of its CenterPoint RTX post-processing service, enabling GNSS observations using available Galileo and BeiDou Middle Earth Orbit (MEO) satellites. Powered by Trimble RTX technology, the free CenterPoint RTX post-processing service provides better than centimeter level positions.
The announcement was made today at ION GNSS 2013 Conference and Exhibition.
The existing CenterPoint RTX post-processing site uses data from the GPS, GLONASS, and QZSS satellite systems. Through a link accessible from the post-processing website, users can enter a Preview site and derive positions that also use data from available open service Galileo and BeiDou MEO satellites.
“With the addition of Galileo and BeiDou MEO support, we offer researchers, scientists and academics the opportunity to evaluate and experiment with results from these evolving satellite constellations,” said Patricia Boothe, general manager of Trimble’s Positioning Services Division. “We are committed to continuing to advance CenterPoint RTX post-processing and the underlying Trimble RTX technology to enable ever higher accuracy positioning solutions.”
Trimble CenterPoint RTX post-processing is a cloud-based service accessed through www.TrimbleRTX.com. Users around the globe can upload static GNSS observation data and receive positioning corrections calculated in the well-defined International Terrestrial Reference System (ITRF) 2008 reference frame. The post-processed solution can be transformed to a variety of regional reference frames by selecting a coordinate system and tectonic plate.
Rockwell Collins has received a 2 million contract from the Air Force Research Laboratory (AFRL) to develop and demonstrate a secure software-defined radio (SDR) GNSS receiver capability.
GNSS typically refers to equipment that can receive signals from multiple navigation satellite systems including GPS, GLONASS, Galileo, and the Chinese BeiDou system. By utilizing multiple available satellite signals, a GNSS receiver can provide improved navigation performance and signal availability.
Hosted in a software-defined radio, this AFRL program will develop the security architecture required for the receiver equipment certifications. The arrival of modernized GPS signals and other constellations is changing the way the U.S. military accomplishes GNSS-based positioning, navigation and timing.
“Rockwell Collins is actively researching GNSS capability as it applies to the U.S. and global customer base,” said John Borghese, vice president of the Rockwell Collins Advanced Technology Center. “We’re leveraging decades of GPS experience and leading edge security architectures to produce a navigation receiver that will meet global needs.”
PCTEL, Inc. announced the launch of its next generation multi-band GNSS antennas for global timing and precision tracking applications at the ION GNSS Conference being held this week in Nashville, Tennessee.
The new antennas, which are designed for use with GPS, GLONASS, BeiDou, and Galileo systems, are being showcased along with other PCTEL antennas at the PCTEL booth in the Exhibit Hall, Booth 318/320. All models of the new antennas are available for sale.
Equipment providers for carrier network timing, precision agriculture, and global asset tracking applications need a single antenna solution for global deployment. PCTEL’s new GNSS1-TMG-26N and GPS-LB12GL-MAG antennas address global compatibility issues for two of the industry’s most crucial applications.
For critical timing applications for macro and small cell deployments, PCTEL has developed the GNSS1-TMG-26N antenna. The GNSS1-TMG-26N is a fixed mount network timing antenna covering GPS, GLONASS, Beidou, and Galileo system frequencies in one single unit, making it a true global solution.
PCTEL’s GPS-LB12GL-MAG antenna is designed for precision agriculture.
For global precision navigation applications, PCTEL has developed the GPS-LB12GL-MAG to cover GPS L1, GPS L2, GLONASS, and L-BAND constellations. The GPS-LB12GL-MAG’s multi-band coverage addresses the precision market in the USA as well as differential correction signals needed across Europe and Asia.
“PCTEL will meet the GNSS market requirements for our global customers while maintaining PCTEL’s high standards for quality and performance,” said Jeff Miller, president of PCTEL Connected Solutions. “We understand that our products need global compatibility to support our customers around the world. We are proud to showcase our design excellence in this highly technical area,” added Miller.
GPS World contributing editor Eric Gakstatter gave a talk on predicted ephemeris at the Civil GPS Service Interface Committee (CGSIC) on Tuesday. The talk was invited and the topic was suggested by CGSIC coordinators. The 53rd meeting of the CGSIC was held Monday and Tuesday before the Institute of Navigation GNSS+ 2013 Conference. Here is Eric’s talk:
Whenever I point a critical finger at the GPS folks, I apologize before I do so because it’s really a wonderful system.
What I try to offer the community in general is a link between the GPS system operators and the civil community. It’s amazing when you think about it, two huge user bases of civil and military users, and a little strip called CGSIC that communicates between them. Rick [Hamilton of CGSIC] introduced me to this concept a couple months ago and asked me to investigate it and think about it. This is what I researched and talked to some folks and came up with.
First, I want to introduce you to some folks doing fascinating things with GPS.
Here’s a young company, Geoloqi, doing really interesting things in Portland. They don’t have any clue where GPS came from; they just have it on their smartphones. One of the founders collected GPS data everywhere he went for the last three and a half years. This map shows 2.5 million data points, and I think it’s fascinating.
This map of Portland by Geoloqi has 2.5 million data points.
These folks interface between the GPS chipset in the mobile device and the apps that run on it. They sold their company to Esri last year.
“Geolocation has the potential to become an indispensable part of our lives. But to be a valuable service, the technology needs to be invisible yet opted into, private, and secure.” — Amber Case, Geoloqi founder
These kids just want to get things done, create ideas and create products: things like, check into a hotel when you get within 100 yards of the door; get your prescription prepared and ready for you when you come within a certain distance of a pharmacy. All these kinds of things are based on the geotrigger or geofence concept.
Now, talking about my work, primarily in surveying and mapping, with companies like utilities with 15 million customers and a lot of infrastructure. To put that at the fingertips of a maintenance person, that’s pretty amazing. I’ve been swimming in this soup for a long time, and I hadn’t heard of this concept — the predicted ephemeris (PRED) produced by GPSOC.
Take a PRED state vector data file, which is currently generated every 15 minutes by the GPS Operations Center under For Official Use Only (FOUO), currently designated unclassified, but not accessible to the general public. If it were made available for public use, it could decrease time to first fix from 40 seconds when you turn on your mobile device, to 5 to 10 seconds.
In the high-precision field like mine, surveying, it really doesn’t make too much difference because by the time you get out of your truck and set up your gear, 30 seconds has already gone by and it doesn’t make much difference.
Now it could be more of an issue with mobile devices in GPS-impaired environments such as urban canyons or indoor environments, where 30 seconds could make the difference between getting a fix or not.
If predicted ephemeris were available, developers could distribute it terrestrially via a wireless network to mobile devices.
Problem: How to transfer PRED from a U.S. government FOUO environment to make it available to application developers?
To me as a product developer or a product manager, interested in pushing products out to the community, that’s a really small speed bump. But when I talk to colleagues who operate in that (government) space, that’s a significant undertaking, a real obstacle. We’re talking about a big change, and a big process to go through to effect that change.
PRED from the horse’s mouth, so to speak, from the U.S. Air Force, really builds credibility. I can build it into a product, because I know it’s going to be there three or four or more years from now.
PRED can be made available, but Civil GPS app developers need to speak up — because civil users won’t. They don’t know about it. They don’t know what is possible.
“How does somebody know what they want if they haven’t even seen it?” — Steve Jobs
I’m trying to raise awareness here. I’ll probably write about soon in the magazine or in my [Survey Scene] email newsletter.
Frank van Diggelen, Broadcom. We’ve been doing this in the commercial world for over a decade. You all have it in your cellphones, with about 90% likelihood provided by Broadcom or someone who’s licensed our patents. It doesn’t work properly unless you have the source of the data and the client side working very cooperatively. The issue is the . . . gap between prediction and use. If the satellite is moved (in orbit or clock) then the prediction is wrong, and you need client-side software that is design cooperatively with the predictions. Our predictions are available in 2-, 4-, 7- or 30- day intervals. Think of a use case where you get a seven-day prediction, and then go away from network coverage for several days, meanwhile, say on Day 4, a satellite is moved or has its clock adjusted, on Day 5 it is set healthy, on Day 6 you turn on your handset and use the prediction from six days ago — it will be wrong and your client-side software has to catch that and know know how to invalidate the predictions.
We deliver these orbital predictions at about the rate of a billion per month. It’s been there for 10 years, and its been working so well most people aren’t even aware that it’s there. If the Air Force puts these out, that sounds great, but if you don’t have client-side software looking for erroneous predicitions — when a satellite is adjusted or moved — then things would be a lot worse for the user community than they have for the last 10 years.
Eric Gakstatter: I understand that, but that’s true for any technology. If a company implements it incorrectly, the market will reject it. Let the market decide.
There may be a need for a non-proprietary solution (PRED) that is publicly available so it could be implemented by other developers, and level the playing field to increase market adoption of GPS.
The TET-1 satellite has Septentrio on board. (Image: DLR)
Septentrio announced today that a PolaRx2 receiver has reached more than 330 hours of successful operation on board “Technologie-Erprobungs-Träger 1” (TET-1), the first satellite of the German On-Orbit-Verification program. The Septentrio receiver is the backbone of the Navigation and Occultation Experiment (NOX) developed by German Aerospace Center (DLR). The purpose of the experiment is to prove the suitability of commercial-off-the-shelf (COTS) technology for use in space missions.
The receiver provides GPS observations on the L1 and L2 frequencies, which are used for precise orbit determination and atmospheric sounding. The dual-frequency observations allow reconstructing the orbit of TET-1 with decimeter or better 3D accuracy. A dedicated antenna pointed into the anti-flight direction of the satellite is used to collect measurements during GPS radio occultations, where the signals are tracked through the Earth’s atmosphere.
After the first activation on July 26, 2012, the receiver has operated flawlessly in the harsh environment 500 km above the Earth’s surface and has been unaffected so far by space radiation. The receiver demonstrates quick acquisition of GPS signals and tracks a sufficient number of satellites even under challenging visibility conditions. The short time-to-first-fix together with the high availability of position and timing information from the navigation solution make the PolaRx2 a very suitable receiver for space-borne applications.
“We are proud to see a new illustration that our standard commercial receivers perform flawlessly even in the harshest circumstances,” said Peter Grognard, Septentrio’s founder and CEO. “Our customers benefit every day from the same high quality and robustness for their demanding industrial applications on earth ”
At ION GNSS+ this week, SBG Systems announced the release of the Ekinox Land Solution, an all-in-one solution combining the cost-effective inertial navigation system with an odometer, and a GNSS RTK reference station for smooth positioning in land applications. GPS positioning in urban canyons, forests, or tunnels has always been challenging. By taking the best of these complementary technologies, Ekinox Land Solution provides reliable positioning in an affordable package, the company said.
SBG Systems is exhibiting the system Wednesday through Friday at Booth 519/521 at ION GNSS+ in the Nashville Convention Center.
The combination of the Ekinox inertial navigation system with complementary technologies such as wheel-speed sensor (DMI) and RTK GNSS is the key to providing smooth vehicle positioning, even during GPS outages, SBG Systems said. To save users and integrators both time and money, the best equipment has been tested and selected to build a cost-effective and all-in-one package — Ekinox Land Solution.
Ekinox Land Solution is an integrated package built from the Ekinox Series, a range of inertial navigation systems based on robust and cost-effective MEMS technology. Mounted on a vehicle, Ekinox Land Solution provides real-time roll, pitch, and true heading (0.05° accuracy) while delivering a smooth position (2 cm). Data is output at 200 Hz and recorded in an 8-GB datalogger. Post-processing software is offered to increase attitude accuracy (up to 0.02°).
Ekinox Land Solution is designed to answer the growing need of vehicle real-time positioning, imagery sensor triggering, and data georeferencing at an affordable price. Examples of applications include mobile mapping, machine control, car motion analysis, and unmanned ground vehicle navigation.
The Ekinox series includes the Ekinox-A, and Attitude and Heading Reference System; the Ekinox-E, an Inertial Navigation System (INS) whose position feature depends on aiding equipment; the Ekinox-N, an INS with an embedded L1/L2 GNSS receiver; and the Ekinox-D, an INS with an integrated Dual Antenna GNSS receiver.
SBG Systems is a French supplier of MEMS-based inertial motion sensing solutions. The company provides a wide range of inertial solutions from miniature to high accuracy. Combined with calibration techniques and advanced embedded algorithms, SBG Systems products are designed for defense, industrial and research projects, such as unmanned vehicle control, antenna tracking, camera stabilization, and surveying applications.
Designed to automatically code and decode GPS signals, encryptors facilitate the exchange of user information by securely transmitting navigation payload data between the OCX ground station and the orbiting constellation of satellites.
“Following successful thermal, electromagnetic interference and security verification testing, Exelis delivered the first three of 14 encryptors,” said Kevin Farrell, positioning, navigation and timing general manager for Exelis Geospatial Systems. “Once integrated into the OCX system, the encryptors will help ensure that the next generation of GPS satellites will be ready for launch and provide advanced capabilities and security to both military and civilian users of the signal and the overall GPS modernization effort.”
Exelis provides critical elements of software in the navigation processing subsystem that will enable controllers to better understand the exact position of GPS satellites. This helps ensure accurate navigation information is securely broadcast to users. In addition to encryptors, Exelis is building high-precision receivers for use in GPS ground monitoring stations and satellite signal simulators for testing purposes.
As part of the overall GPS modernization effort, Exelis is also on contract with Lockheed Martin to provide payloads for GPS III satellites. Exelis is a major space technology provider, supporting both the satellite and ground portions of the GPS III modernization program.
For nearly 40 years, Exelis payloads and payload components have been on board every GPS satellite and have accumulated more than 500 years of on-orbit life without a single mission-related failure due to Exelis equipment.
The Air Force Institute of Technology (AFIT) and Locata Corporation have signed a Co-operative Research & Development Agreement (CRADA) to build and demonstrate new Locata multipath mitigation technology for use in GPS receivers. This cooperation is expected to leverage many years of proprietary Locata ground-based technology development to bring completely new capabilities to satellite-based GPS receivers, AFIT said.
The Air Force Institute of Technology, or AFIT, is the Air Force’s graduate school of engineering and management as well as its institution for technical professional continuing education.
The CRADA is specifically directed to evaluate Locata’s patented correlator and switching antenna technologies for use in positioning receivers running at GPS frequencies. Locata’s engineers will transfer knowledge and experience they have gained with existing Locata commercial systems to help AFIT design and build an initial multi-element GPS-based switching antenna prototype which is based on Locata’s patents. This will ensure AFIT researchers and engineers can familiarize themselves with the new antenna’s characteristics, and provide AFIT with an essential platform to develop GPS-specific versions of Locata’s correlator and switching algorithms. When built, AFIT intends to use its GPS receiver and the prototype switching antenna to physically demonstrate the feasibility of using Locata technology to improve GPS receiver performance.
An animation was created specifically to explain RF problems created by multipath and Locata’s VRay solution. The animation shows the first proof-of-concept 2D, 64-element antenna Locata’s engineers prototyped in 2011.
After initial prototypes are built, AFIT plans to design and test several other GPS-based versions of Locata’s switching antenna array to assess how Locata’s commercial antennas can be adapted to use cases which are of particular interest to the military. Designs already discussed with Locata include stand-alone antennas, arrays conformal to a vehicle’s frame (such as a Humvee’s roof or aircraft fuselage), and a version built into helmets.
As a first step in implementing this CRADA collaboration, AFIT personnel visited Locata’s head office the week of April 29 for a detailed, wide-ranging introduction to the design fundamentals for this new type of antenna. Locata hosted AFIT’s John Raquet, Peter Collins and Jason Barhorst (see picture) in multiple engineering meetings where Locata’s current production version antenna was revealed for the first time, and then closely analyzed. AFIT and Locata engineers then workshopped the modification and design choices required to integrate Locata design into a GPS form-factor.
“If this CRADA is successful, Locata’s technology could enable a significantly improved technical performance and reduction in the cost of multiple-element GPS antennas,” said John Raquet, director, Advanced Navigation Technology Center, AFIT. “This will enable much wider adoption of the technology, resulting in more reliable GPS positioning for more users. We are excited to investigate this technology advance for the benefits it will potentially bring to American warfighters.”
“We are incredibly proud to once again be involved in a CRADA with the Air Force Institute of Technology, developing on the cutting-edge of navigation technology,” said Nunzio Gambale, CEO and co-founder, Locata Corporation. “Our previous LocataNet partnership with Dr. Raquet and his world-class AFIT researchers quickly taught us why this team is renown throughout the industry. The AFIT engineers bring an exceptional skill base to this important integration of Locata technology into GPS receivers. I’m certain that our collaboration, along with access to the USAF’s unmatched prototyping and testing capabilities, will deliver ground-breaking functionality for future GPS devices.”
AFIT expects at least one master’s degree to be awarded for the research tasks involved in the CRADA. Work against the approved CRADA project plan will commence immediately, and involve several other participants providing admin and lab support to AFIT and Locata. The final report produced by this CRADA will include results and measured performance of the Locata-enhanced GPS receiver and other design considerations gleaned from AFIT’s experience with the new Locata antenna and correlators.
AFIT-Locata Kick-off Meeting: This is the first picture ever released by Locata which shows their radically new switching antenna, a design that AFIT will now modify for use with GPS receivers. Pictured (L-R): Dr. Steve Hewitson & Ian Sainsbery (Locata engineers); Jason Barhorst (AFIT); David Small (Locata technology inventor), Nunzio Gambale (Locata CEO), Dr. John Raquet (Director, Advanced Navigation Technology Center, AFIT), Dr. Peter Collins (AFIT), Dr. Trevor Hobbs (Locata Director of R&D).
