The Lockheed Martin GPS III Non-Flight Satellite Testbed (GNST).
A Lockheed Martin vice president has stated that the first GPS III satellite will likely launch in 2017, not 2016 as had been projected in the most recent update.
The company is readying the first satellite for launch availability by the end of 2015, for launch as early as the end of this year, but Space News reports that Mark Valerio, vice president and general manager of Lockheed Martin’s military space business, stated in a Feb. 18 news briefing that he expects the Air Force will schedule its launch for early 2017.
The GPS III generation of modernized satellites — with new signals, added signal strength, and resistance to interference and jamming — was originally projected to begin orbiting in 2014. Technical difficulties have delayed the program. The principal issues, those with the payload, have now been resolved, according to Valerio.
Valerio expects a firmer GPS III launch announcement for 2017 in March. He expected the final launch date “will depend on the health of the existing constellation, the availability of launch slots and synchronization with the ground system.” Ultimately, the Air Force always makes the final decision on the launch date.
Lockheed Martin is contracted to build eight GPS III satellites.
Late last year, a spokesman for the Space and Missile Systems Center said that “The first GPS III launch is tentatively considered for the first half of FY17, based on booster availability and Air Force launch priorities.”
The Air Force has put out feelers for other contractors to finish out the full generation of GPS III satellites. Lockheed Martin is building eight, with an option for four more, totalling 12; a complete constellation of III-generation satellites would require 24. Boeing Space and Intelligence Systems and Northrop Grumman Aerospace are reportedly interested.
“The best thing I can do is keep marching along the plan we have,” Valerio said. “We’re certainly not afraid of the competition.” Lockheed Martin has submitted cost-cutting proposals for the current GPS III satellite design, he added.
Ground Control
The corresponding new ground system for GPS III, the Operational Control Segment (OCX), has also fallen behind schedule. Just this month, the Air Force announced that Lockheed Martin may develop an interim control capability, a set of changes implemented upon the current control segment, the Architecture Evolution Plan (AEP), as a backup.
Michael Gilmore, the Defense Department’s director of operational test and evaluation, recently stated that OCX delays have pushed back GPS III operational testing “until after at least six, and as many as eight,” satellites have been launched into orbit. “This introduces significant risk that effectiveness and suitability deficiencies in GPS III satellites will not be discovered until it is too late to prevent their introduction to the operational constellation.”
Budget Blues
Don Jewell, GPS World’s contributing editor for defense, has written at length about the GPS III and OCX situations in his February newsletter column, “USAF FY16 Budget Plus $10B More, Please!”. We condensed some of his remarks, particular to the budget battle on Capitol Hill, for the Out in Front column of the March issue of the magazine, due out soon. Here is a further digest of those comments.
The 2016 President’s Budget, submitted in February, contains an Air Force requested a budget of $122.2 billion. This may be too little, too late.
On the satellite side of the house, GPS III has problems centering on development and delivery issues with a subcontractor. In this case, however, the whole satellite program is not failing, just a component, albeit an important one: the Mission Data Unit (MDU).
For GPS III+, the Air Force plans for a two-phased competition process: a Production Readiness competition for up to three firm-fixed price contracts to mature competitors’ production designs for a competition in a full and open competition for up to 22 GPS III Production SVs [satellite vehicles] with an expected award in FY17/18.
This sounds great if you need an entirely new GPS III system, which consists of, at a minimum, a new payload, satellite, launcher and ground C2 system. In fact, the government only needs an MDU. Failure to produce the MDU on time has delayed GPS III by 18 months to date.
More troubling are the government proposals to entertain other bids to finish the second half of the GPS III constellation. Such a competition or re-bid will take at least three years and cost hundreds of millions of dollars — and Lockheed Martin may well win again in the end
A significant added cost to the GPS budget concerns the need for a new ground C2 system if the total new systems approach is taken. If preliminary elements of the GPS space segment are developed without cross-checking the impact to the GPS control segment, technical, operational, budgetary and schedule impacts will be significant.
The already perturbed OCX budget likely has not considered the integration costs of a newly developed, yet-to-be-procured GPS III+ SV. OCX today is geared for the GPS III already contracted for, and it is failing to meet that challenge.
Budget constraints are tight and getting tighter, mandating the Air Force “do more with less” in every context. For GPS III SVs, this should — but by no means necessarily does — indicate developing an alternate MDU rather than buying a new block of GPS SVs.
Capt. Jared Delaney, 19th Space Operations Squadron satellite vehicle operator, right, and Senior Airman Bryan Wynkoop, 19 SOPS satellite system operator, monitor telemetry during the GPS SVN-69 launch Oct. 29, 2014 at Schriever Air Force Base, Colo. (U.S. Air Force photo/Dennis Rogers).
The following story by Scott Prater appeared in the Schriever Sentinel, a weekly newspaper published by the Colorado Springs Military Newspaper Group. See http://www.schriever.af.mil/units/publicaffairs/ for further information.
By Scott Prater Schriever Sentinel
11/19/2014 – SCHRIEVER AIR FORCE BASE, Colo. — It’s been a busy year for members of the 19th Space Operations Squadron. As operators of the GPS launch and early orbit, anomaly-resolution and disposal system, 19 SOPS members executed a historically high number of satellite launches (four), and disposed of a legacy GPS vehicle, all within the past 10 months.
“The last time we launched four vehicles in one year was 1993,” said Maj. Kimberly Adams, 19 SOPS LADO flight commander. “We’re looking forward to a more normal [operations] tempo, in the coming year.”
Tensions were high Oct. 29 during the lift-off and early-orbit of SVN-69, a GPS Block IIF vehicle, when a CBS news crew captured film footage of the event on the operations floor here.
“That was out of the ordinary for sure,” Adams said. “Compound that anxiety with the knowledge that we had just completed final configuration of a GPS vehicle disposal not 48 hours prior and you can understand the type of month October was for us and our 2nd Space Operations Squadron teammates.”
Senior Airman Bryan Wynkoop, 19 SOPS satellite system operator, wouldn’t change a thing about the past few months of 2014.
“It’s exciting,” he said. “This sure beats working a regular job. The drama and importance of what’s taking place here is exactly what I signed up for.”
Adams and Wynkoop are Air Force Reservists, as are all 19 SOPS members. The squadron falls under the Air Force’s 310th Space Wing, headquartered at Schriever AFB, and works in partnership with 2 SOPS, the 50th Space Wing unit responsible for commanding and controlling the GPS constellation.
Adams says 19 SOPS was stood up precisely to conduct GPS launches, manage anomalies and process disposals.
“We start preparing for launch about 90 days out,” Adams said. “With so many launches so close together, we often began preparations for one launch before the previous one was off the pad.”
Their partnership with 2 SOPS has proved beneficial for both squadrons.
“This most recent launch was my seventh and Airman Wynkoop’s sixth,” said Adams, who is in her fifth year at 19 SOPS. “Active-duty Airmen typically reside on station for roughly three years, so oftentimes our 2 SOPS teammates are looking to us to provide continuity and experience.”
That continuity became crucial during disposal operations for SVN-33. It had been more than two years since the two squadrons had disposed of a vehicle and Wynkoop was one of the few Airmen at Schriever who was familiar with the operation’s intricacies.
“These events don’t happen often, so to have played a role in two huge events was something special for all of us who were here,” he said.
Less than 48 hours after SVN-33 had been fully configured for disposal, SVN-69 was standing on the launch pad at Cape Canaveral, Florida.
Adams, Wynkoop and their fellow 19 SOPS operators’ day started eight hours prior to the launch.
“Wynkoop had to set up communications links with our antenna at the Cape so we could get telemetry data from the satellite,” Adams said. “Once the rocket lifted off, I was performing communications checks and verifying that we were meeting all of our requirements.”
Then they waited.
Three and half hours after launch, SVN-69 separated from its booster rocket.
“At that point we obtained an initial state of health from the satellite to ensure everything was OK and then we started commanding,” Adams said.
Wynkoop explained that though he and his teammates are actually studying telemetry data through their monitors on the operations floor, it’s easy to envision what’s happening in space.
“The vehicle is spinning once it separates from the booster,” he said. “We then issue commands to slow the spin and deploy the vehicle’s solar arrays, antennas and other critical components. Later, we get the vehicle in a condition known as sun safe. Shortly after, the vehicle acquires Earth and is in a stable orbit in the GPS slot where it’s supposed to be.”
Now, it’s up to 2 SOPS to command and control the satellite, one of 39 on orbit. The squadron expects to receive satellite control authority of the spacecraft later this month and the next GPS launch is scheduled for March 2015.
The U.S. Air Force’s fleet of GPS Block IIR and IIR-M satellites, manufactured by Lockheed Martin, have reached 200 collective years of operational life. Chip Eschenfelder of Lockheed Martin displays a model of one of the GPS IIR’s at the company’s booth at the ION GNSS+ Conference September 9-12 in Tampa, Florida.
Two U.S. Air Force officers provided a GPS program update at Tuesday morning’s Civil GPS Service Interface Committee meeting plenary session at the ION GNSS+ 2014 conference in Tampa, Florida. Here are some key points from the presentations by Colonel Matthew Smitham, deputy director, GPS Directorate, and Lieutenant Colonel Todd Benson, Commander, Second Space Operations Squadron:
31 primary satellites on orbit, 7 satellites in residual status, 1 satellite in test status
best weekly URE of 58.7 cm during week of 18 August 2014
newer satellites typically perform better than older ones
anticipate URE dropping to about 30 cm in a few years as more modern satellites come on line
60-70 navigation data uploads to the satellites are performed each day; average of about two per satellite per day
IIFs:
SV 3 and SVs 5-12 have improved rubidium clocks; one of the IIFs is running on a cesium clock
14 SVs are currently broadcasting L2C (set healthy); 7 SVs are broadcasting L5 (set unhealthy)
CNAV:
Data uploads are currently being done about twice per week to each satellite; daily updates expected by December 2014
average UREs currently about 1.4 m (data ages quickly with few uploads per week); expect CNAV URE to be marginally better than LNAV (Legacy NAV) when daily uploads begin
Continued progress in bringing M-code on line; expect early use by 2017
GPS III:
satellites will use three improved rubidium clocks
although the program is behind schedule, SV 1 will be available for launch starting in January 2016
the Block 0 version of the OCX (Next Generation Operational Control System), currently under test, will be needed to support the GPS III satellites
Artist’s rendering of GPS III satellite (courtesy of Lockheed Martin).
So, there I was, sipping a cold green tea in the shade on my back deck in the beautiful foothills of the Rocky Mountains in early June, when the phone began to ring off the hook. Upon answering, I was hit with a barrage of questions. Have you seen the GPS III Sources Sought? What should we do? Do you have any advice? Should we respond? But by far the question I thought expressed most everyone’s initial reaction of incredulity was “Are these guys serious?” For frankly this Sources Sought does contain a bit of a giggle factor.
The questions continued and the phone rang all week. Officially the Sources Sought being referenced is the GPS III Space Vehicles Production Readiness Solicitation Number: FA8807-14-R-0008. Prepared or not prepared by, take your pick, the space acquisition folks at SMC (USAF, Space and Missile Systems Center), and it has caused quite a stir in the PNT (position, navigation and timing) industry.
Before we get ahead of ourselves, I should explain exactly what a Sources Sought means in terms of what the U.S. government is looking for and how to respond — in my humble opinion of course.
First a Sources Sought, as defined by the business folks at Georgia Tech (GTPAC) who have researched the matter thoroughly and who I absolutely agree with, is not an actual bid or proposal solicitation; instead, it’s a solicitation of interest. You should think of a Sources Sought as market research being conducted by a government agency or service to determine the capabilities and interests of the marketplace in a specific area, product or capability. This specific Sources Sought should be of interest to companies having an interest and capability to produce products relating to GPS III specifically.
So, that’s the boring official definition, but what is a Sources Sought really? Certainly, the official definition works, but more often than not in my experience, the Sources Sought has also been used to:
Determine what companies, new and established, are players and who is still in the game.
Determine what partnerships might be formed and how companies might work together to provide a required and often difficult capability. Often government acquisition officials will discover a new capability from a trusted supplier, or discover new teaming arrangements that provide a synergy otherwise unavailable.
Determine who is paying attention.
See which companies answer the announcement. Acquisition officials say it is often just as interesting and enlightening to see which companies do not submit a response as it is reading the proposals of the responders, especially if the Sources Sought is being used as justification for a Sole Source award.
Determine if the project has any hope of succeeding, and if so, how do various companies approach the problems involved?
Provide an official and public catalyst for lethargic or too-comfortable contractors that are not getting the job done on a current contract. Fear can be a great motivator.
Enact the old marketing axiom, “Let’s run it up the flag pole and see who salutes.”
Regardless of what you feel the real reason or reasons for the GPS III Sources Sought might be, or even if you have doubts about the seriousness of the release, the one hard and fast rule among marketers is that if you have any capability that even vaguely matches the Sources Sought announcement, then by all means respond.
The official GTPAC advice — and again, I totally agree — is to always respond to a Sources Sought if it appears to be of any interest to you. Just as I have always said to company marketing reps, when asked about the company’s capabilities, the answer, a la Marketing 101, is always “Yes” until it is emphatically “No.” As in:
“Can you build that MDU?”
“Absolutely!” (Stage whisper) “What’s an MDU?”
“Dude, it’s a Mission Data unit.”
“Oh yeah, that MDU. Of course we can build it!”
It may be hard to believe, in this technological day and age, but contracting officials frequently complain about the limited responses they routinely receive to Sources Sought. Responding is usually quick and painless, and can be the first step to place your company in the running for a lucrative government contract. It distinguishes you from your competitors, who did not take the time or effort to respond. The bottom line is it may very well lead to an inside track on an eventual government contract. Just like poker — you can’t win if you are not in the game.
Of course, the reverse is also true, as almost every Sources Sought states. There are no guarantees, and a Sources Sought announcement may — or may not — be followed up by the agency or service with the issuance of an actual bid or RFP (Request for Proposal). The GPS III Sources Sought legalese reads this way: “This notice does not constitute a Request for Proposal. There has been no decision to develop an RFP for the effort in this sources sought notice.”
You take your chances, but nominally it is time well spent, as most Sources Sought require very little in the way of scripted paperwork and government forms. Sometimes the response may be in the form of a simple response on company letterhead laying out your qualifications and stating clearly that you and your company are interested.
However, the government being the government, more often than not the reverse is true, and there may be very specific instructions in a Sources Sought for responding. GTPAC recommends, as do I, that your company follow these instructions to the letter. Give the government no more or less than requested — in other words, give the federal agency or service which posted the Sources Sought notice exactly what it asks for in exactly the form it asks for it.
Now that we are all on the same sheet of music and fully understand exactly what a Sources Sought announcement means, why did this particular GPS III Sources Sought generate so much interest?
Caught off Guard
First I think, well actually I know, this announcement caught almost everyone off guard. It was a surprise, even to those of us who heard rumors about it for some time, not only because of the timing, but also the scope. It far exceeded what most everyone expected —we will get to that shortly. My sources inform me the exact wording and timing were even a surprise to Lockheed Martin Space Systems Company (LMSSC) and Exelis, who are, of course, as incumbents officially excluded from responding.
In retrospect, however, perhaps it should not have been that big of a surprise. General William (Willie) Shelton (USAF), who when this column is first released will have only 48 hours remaining as the commander of Air Force Space Command, had been telegraphing for some time, in sometimes strident language, that he was not happy and something was in the works. He has been uncharacteristically publicly critical of both LMSSC and Exelis for schedule slips and overruns pertaining to GPS III.
Without a doubt, Lt. General Ellen Pawlikowski (USAF), the most recent former commander at SMC (Space and Missile System Center) where the GPS Directorate is located in Los Angeles, California, at LA AFB, let her misgivings concerning a single provider for the GPS III payload be known for some time. Earlier this year, referring to LMSSC, General Pawlikowski was quoted as saying “They know we are not happy — that we are disappointed at the delays we have seen, the technical issues that their subcontractor [Exelis] has had, and probably they are considering whether an alternative source could provide them a better opportunity…I think that Lockheed is doing the right things to figure out how do they best deliver the GPS III in the timelines that they’re expected to.”
In LMSSC’s defense, it was always aware of a possible schedule slip, as was the USAF — for more than two years a bevy of LMSSC engineers and senior managers have been putting in overtime at the Exelis facility in Clifton, New Jersey, to try and wrestle the wayward Mission Data Unit back on track. Many of them are still there, plugging away, including the indefatigable and always optimistic former LMSSC GPS III Program Manager and VP for Space Keoki Jackson.
The MDU is the beating heart of the payload for the GPS III SVs, and it has been in trouble for some time. So, although LMSSC and Exelis are late to need for the three LMSSC GPS III payloads awaiting a heartbeat in the City of Oz or the new LMSSC manufacturing facility in Deer Creek Canyon in Littleton, Colorado, it is not from want of extraordinary efforts to deliver the payloads on time, and those efforts continue today.
Lockheed Martin spokesman Chip Eschenfelder dropped me an email recently that stated: “All GPS III SV01 (Space or Satellite Vehicle Number One) Navigation payload components — including the Mission Data Unit — have successfully completed unit acceptance testing; these components have been integrated onto the payload panel; and the panel is now undergoing panel-level testing [at Exelis]. The SV01 Navigation Payload forecast delivery to Lockheed Martin is Fall 2014.”
As I write this, I have just received an email from Kristin Jones, the senior communicator for Geospatial Systems at Exelis. She states: “Delivery of the GPS III navigation payload to Lockheed Martin continues to progress following recent Mission Data Unit build and successful test activities. The GPS III navigation payload is an original, highly advanced system that brings new capabilities to the GPS constellation, including improved user accuracy and a more robust signal for contested environments. The new flexible design is also optimized to accommodate additional capabilities in the future. This system has now successfully completed testing and has been added to the payload panel. The integrated payload panel is now going into ambient testing. Also, all six of the navigation payload transmitters have successfully completed their ATP testing. To date, significant testing with flight-like engineering units and the SV01 flight hardware indicates that signal crosstalk variances have been addressed, and GPS III will meet all mission and quality requirements. Exelis is on track for a fall delivery to Lockheed Martin.”
The Farmers Almanac states: “In 2014, the autumnal equinox brings the fall season to the Northern Hemisphere on September 22 at 10:29 P.M. EDT. Let’s see, that is only a biblical 40 days and 40 nights from now, and according to both LMSSC and Exelis the MDU problems have been resolved, to the best of their knowledge to date. The MDU for GPS III SV01 is in the final portion of panel testing, and will undergo more rigorous testing, including thermal vacuum testing at the LMCO (Lockheed Martin Company) facility in Deer Creek this Fall. That is very positive news, and it sounds as though the MDU is back on track.
LMSSC has been involved with GPS for decades, and Exelis, formerly ITT, has been involved in producing all or some portion of almost every GPS payload for four decades, since the GPS program began. So why were there technological problems at this late date? I can only say that providing the Gold Standard for space-based PNT is a complicated business, and as the Europeans are learning the hard way with Galileo, slips are just part of the environment in spaceborne PNT platforms.
How Would It Work?
A subset of the official wording of the GPS III Sources Sought, which you can view in its entirety at Fed Biz Ops.gov goes like this:
SMC/GP is conducting market research to review the industrial base and determine whether viable alternate sources exist to the continued GPS III SV production on the current baseline by LMSSC. For every block of GPS satellites over the past 40 years, the primary risk has been the navigation payload. This market research seeks to determine if alternate sources can attain a production-ready configuration for a GPS III SV with an alternate navigation payload in time to allow the Production Ready Alternate Source to compete with LMSSC for up to 22 satellites.
For many, the key phrases are “product ready” and “compete.” This is not only, as many first thought, a Sources Sought searching for an alternate source for a GPS III MDU. It is that and much more. It is a Sources Sought for new competition. SMC is also looking for a full up GPS III production capability that is able to compete with LMSSC for up to 22 more GPS III SVs, and they want it at a FFP (firm fixed price). At this stage, some pundits might say it is a solution looking for a problem.
The bottom line is SMC is asking for companies to step up and produce a full-blown and fully compliant GPS III space vehicle, with NDS and all the associated payloads. This includes a validated, certified and integrated launch capability to compete with LMSSC for the next 22 GPS III SVs, and even though it is not specifically mentioned, competitors could find themselves competing against the United Launch Alliance with launch services from SpaceX, who bill themselves as the world’s fastest-growing launch provider. Who are the competitors? Can you say Boeing, Northrop Grumman, Raytheon and General Dynamics? Because these are the usual suspects, and all conspiracy theories aside, it appears the government does not want LMSSC to have a monopoly on GPS, and the Exelis MDU worries have given them…well, let’s just say, have justifiably fed that fear. The GPS III Sources Sought is just one result.
Results
So, just what were the results of the GPS III Sources Sought? I could easily say your guess is as good as mine, but I do have my sources, and they tell me on the one hand SMC heard from the usual suspects, and now you know who they are, about what they expected to hear, but then again they also heard from a couple of surprise (only to SMC) companies. Both have significant space capabilities, but have in one case not played in the GPS arena in some time (several decades), and in another case, a well known company may be looking for a way to increase their GPS role.
I also heard that few of the submittals were compliant or met all of the required criteria, and that should definitely not have come as a surprise to SMC. Consider they are asking companies with space capabilities to commit to designing an MDU from scratch — and indeed it may need to be an advanced MDU for new capabilities that will work with the current GPS III LMSSC interface. Those specifications are not exactly common knowledge, certainly not for a Sources Sought. SMC is asking for a full-up compliant system, and only gave companies two weeks to think about it.
Going back to my original premise: How should these companies have responded? Again, Marketing 101 — hopefully they said, “Sure, we can do that,” submitted the required paperwork, and then started scrambling to put a team together and figure out how they can produce and compete. And competing against the incumbents, especially when they are LMSSC and Exelis, is no easy task. Hopefully past performance still matters.
The 2014 Lamborghini Gallardo (Wikimedia Commons).
Still the disconcerting, curious and, according to some space companies, the giggle factor, concerns the scope of this would-be proposal. LMSSC has three almost-complete (missing only one crucial part) GPS III space vehicles waiting for a fully tested and certified MDU. Every other aspect of the GPS III program is on track and has been tested.
This is analagous to Sant’Agata Bolognese, a small comune in the province of Bologna, which just happens to be the home of Lamborghini, complaining that it has three brand-new Lamborghinis waiting to be delivered, if only Audi would ship the engines. One of the reasons I like this analogy is that it happened, it works, and I love exotic sports cars. The other reason is that it is easy to see the problem is the engine, not the Lamborghini, which remains as exotic and flamboyant as it has always been. Lamborghini is only going to fix the actual problem, a tardy engine delivery. They are certainly not going to scrap everything and fund competitors to build a new Lamborghini from the ground up.
Or closer to home, consider the F-35 engine issue. The USAF did not ask for companies to design a new F-35 just because it needed an alternate engine. It just contracted for another engine supplier — a simple solution to a complex problem. Viola! Bob’s you uncle!
The F-35C Lightning II test aircraft CF-1 performs a flight test (photo by Andy Wolfe, courtesy of the U.S. Navy).
The U.S. government, DoD, USAF, Air Force Space Command, and SMC is putting forward the proposition that it will pay for another company or companies to compete with a proven system that works, and works well. LMSSC GPS IIRs and IIRMs are on orbit today and preforming well past their programmed life. LMSSC knows how to build the best GPS satellites in the world today. Like Lamborghini and the USAF, LMSSC is just waiting on a subcontractor to supply the GPS III engine or MDU.
So regardless of the purpose or multiple purposes of the GPS III Sources Sought, and whether you think it is an overreaction or not, in the end it opens the door to numerous potential players in the GPS space arena. To paraphrase that paragon of wisdom, Martha Stewart, “Competition is a good thing,” even if you have to pay for it.
Until next time, happy navigating, and remember GPS is brought to you free of charge by the United States Air Force.
The U.S. National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board has published the minutes of its December 4–5, 2013, meeting, opening with a quote from Albert Einstein, “We cannot solve our problems with the same thinking we used when we created them,” courtesy of Board Chair Dr. James Schlesinger. Among many other topics addressed, the Board heard a report from Major General Martin Whelan, Director of Requirements, Air Force Space Command, on the road ahead for implementation of the GPS Civil Navigation (CNAV) message on L2C and L5. The subject has stirred some controversy of late, particularly between the U.S. Departments of Transportation (DoT) and Defense (DoD), and DoT is currently seeking public comments on the plan.
The meeting minutes relay the gist of General Whelan’s CNAV remarks as follows:
“While sequestration is having various impacts on DoD budgets, thus far GPS quality, service and refresher plans are unaffected. The FY15 budget is under development.
“CNAV has been under discussion for a considerable time. Currently, L2C and L5 signals are being transmitted, but without a navigation message. AFSPC is working hard to activate these messages as soon as possible. One of the reasons for the delay is that additional time was needed to complete testing prior to activation. Testing began in late summer 2013 and, based on initial test results, a “way ahead” has been plotted. Gen William Shelton, AFSPC commander, wished to assure the Advisory Board of his unwavering commitment to providing full-time broadcast CNAV messaging capability on L2C and L5 as soon as possible.
“The CNAV capability will add diversity and robustness for dual frequency users. Gen Shelton intends to provide details plans to the NCO and a report to the next EXCOM meeting. Current plans are to begin initial broadcasting in the spring of 2014. CNAV uploads will occur twice weekly. The signal will meet GPS Standard Positioning System (SPS) standards, but may not achieve current accuracy levels until full implementation in late 2014.
“CNAV live sky testing occurred in June and was conducted in cooperation with civil, industry, and international partners. The two-week test series included independent assessment and verification. The tests identified four errors that required action. The first, which was addressed in real time, related to implementation of the test series. The second required improvement to the tools suite, which should be totally integrated into the ground segment by December 2014. The third and fourth errors required patches to satellite software. All four issues are now regarded as closed.”
The meeting minutes report this further discussion of CNAV.
“Dr. Schlesinger raised the topic of sequestration and how, based on his early career in budgeting, no budget item is sacrosanct. GPS has enjoyed protection from Deputy Secretary of Defense Ashton Carter, but he is now stepping down and his replacement not yet known. This could provide an opportunity for “the men with the green eyeshades” to come forward to eliminate things.
“Gen Whelan said he agreed that with sequestration, everything – including GPS – is on the table. However, AFSPC continues to strive to avoid any degradation in service. He also welcomed the continued support of the Advisory Board.
“Dr. Schlesinger quoted from a 2006 document: “Our position is to continue to provide the best space-based positioning, navigation and timing service in the world.” The Chinese are now “moving up” on GPS. How is GPS going to stay ahead?
“Gen Whelan said AFSPC is aware of China’s steps in capacity and signal diversity. This, however, does not alter his confidence that GPS remains the “Gold Standard” of world GNSS systems. AFSPC is committed to maintain GPS leadership. However, because of sequestration and budget cuts, this position could not be the position of some people outside of the Air Force.”
A subsequent presentation from the Department of Transportation given by Karen Van Dyke, Director for PNT, DOT Research & Innovative Technology Administration (RITA), did not directly mention CNAV, according to the meeting minutes, but did include this update on civil signal monitoring, taken from the meeting minutes.
“DOT is responsible for performance monitoring of GPS civil signals. She called attention to the International Committee on GNSS’s (ICG’s) transparency principle that “Every GNSS provider should publish documentation that describes the signal and system information, the policies of provision, and the minimum levels of performance offered for its open service.” Currently, this is only done on GPS L1 C/A signals. Performance standards for L2C and L5 have not yet been established. The crucial function of signal/service monitoring is to verify that commitments to GNSS performance are being met. Additionally, monitoring improves the situational awareness for GNSS operators, and provides assurance that any civil service failure is detected and resolved promptly. All these factors support the GPS performance history that has made it the world’s Gold Standard.
“The DOT “GPS Civil Monitoring Performance Specifications” (CMPS) document defines the measurements required to show if performance standards for monitoring GPS’ signals/service are met. The document’s first version was developed in 2005 and listed 193 requirements, covering performance monitoring, signal monitoring, non-broadcast data requirements, and reporting and archiving requirements. The document was later updated to align with the 2008 GPS SPS Performance Standard. The most current CMPS was completed in April 2009 and is available at GPS.gov. Since 1999, DOT has published quarterly reports providing analysis of SPS performance for the Federal Aviation Administration (FAA).”
Further Topics
Other reports delivered to the Advisory Board, and available in the the full meeting minutes, available here, include the following. In addition, many PDFs of the individual reports are available through the meetings Agenda page.
Global Differential GPS System as a Civil Monitoring Utility
Dr. Yoaz Bar-Sever, Manager, Global Differential GPS System, NASA Net Propulsion Laboratory
Automated Driving & Safety Considerations (collision avoidance warning, vehicle-to-vehicle communications, and driverless automobiles)
Russell Shields, PNT Board Member, founder of Ygomi LLC
GPS Disruptions: Efforts to Assess Risks to Critical Infrastructure
The Government Accountability Office’s (GAO) Report on Enhancing Interagency Actions
Eli Albagli, senior analyst, GAO
2013 National Infrastructure Protection Plan (NIPP)
Department of Homeland Security Implementation
Robert Kolasky, Director Strategy and Policy, DHS Office of Infrastructure Protection
Economic Impacts of GPS on Key Sectors in the U. S. Economy
Dr. Nam D. Pham, economist/managing partner, NDP Consulting Group
GNSS Signal Capability – Multi-Constellation Management
Cross-Correlation of Existing & Evolving C/A System Signals
Dr. A. J. Van Dierendonck, AJ Systems
How Far to Take GNSS Interoperability/Interchangeability?
Ken Hodgkins, Office of Space & Advanced Technology, Department of State.
The departing Deputy Secretary of Transportation, John Porcari, wrote a letter in the closing days of 2013 opposing the U.S. Air Force’s announced plans to begin broadcasting Civil Navigation (CNAV) message-populated L2C and L5 signals as early as April 2014. Military personnel are incensed over what they see as Porcari’s impugning, when not ignoring, the Air Force 35-year track record of broadcasting the gold standard of global navigation satellite signals — something in which Transportation has zero experience.
Porcari alludes in his December 27 letter to “non-standard engineering tools” and “non-standard operations” that he believes would come into play for early CNAV broadcast. “These have the potential to inject human error, which may result in unacceptable GPS constellation operation.”
What Porcari means by “non-standard” he does not specify, although he confesses to unease as “the ability to monitor these signals, [without which] the system will not know if the L2C and LS signals are within specification. Given these risks, DOT is concerned that the CNAV messages could provide hazardously misleading information, impacting GPS safety-of-life, protection of property, and economic security applications.” The full text of the Porcari letter is available here.
In addition to questioning Air Force 2 SOPS ability to broadcast an accurate, compliant signal containing CNAV, the letter appears to ignore — or be ignorant of — the 17 official U.S. government/military monitoring sites for GPS distributed around the world, not to mention thousands of other monitoring sites run by government agencies such as the Jet Propulsion Laboratory, the National Aeronautics and Space Administration, and the National Geospatial-Intelligence Agency, and by many universities such as Stanford, Ohio State, Cal Tech, Massachusetts Institute of Technology, and many other international institutions around the world. Many of these sites collaborate under the rubric of the International GNSS Service.
Finally, two private corporations monitor and correct all GPS signals both from space and on the ground: John Deere and Trimble Navigation. Both companies run commercial, automated GPS signal monitoring systems that that report any glitch, change, power fluctuation, or anomaly in the navigation message for all GPS signals with an average two-second notification time.
“This letter is so much BS,” fumed one source who wished to remain anonymous, “coming from an agency that is in arrears in its GPS payments to the tune of more than $70 million and has no clue how to represent the global GPS user. GPS is a ubiquitous system, not just a tool for the DOT and the Federal Aviation Administration. GPS needs to implement these signals for all users and as a modernization program that was promised to be in place years ago.”
Artist’s concept of a GPS III satellite in orbit, courtesy of Lockheed Martin.
Air Force Orders GPS III Satellites 05 and 06 from Lockheed Martin
A December 12 contract modification provided Air Force funding to Lockheed Martin to complete the fifth and sixth GPS III space vehicles (SV 05-06). Lockheeed originally received funding to procure long-lead parts for satellites five through eight (SV 05-08) in February 2013.
The $200,700,415 cost-plus-incentive-fee modification (P00276) on an existing contract (FA8807-08-C-0010) for GPS III space vehicles 05 and 06 means that work will be performed at Littleton. Colorado and Clifton, New Jersey, and is expected to be completed by Dec. 14, 2017 for space vehicle 05 and June 14, 2018 for space vehicle 06. The Air Force Space and Missile Systems Center Contracting Directorate, Los Angeles Air Force Base, California, is the contracting activity.
Galileo Achieves First Airborne Tracking
The European Space Agency’s Galileo satellites have achieved their first aerial fix of longitude, latitude, and altitude, enabling the inflight tracking of a test aircraft.
ESA’s four Galileo satellites in orbit have supported months of positioning tests on the ground across Europe since the first fix in March. Now the first aerial tracking using Galileo has taken place, determining the position of an aircraft using only its own independent navigation system.
The milestone took place on a Fairchild Metro-II above Gilze-Rijen Air Force Base in the Netherlands on November 12. It was part of an aerial campaign overseen jointly by ESA and the National Aerospace Laboratory of the Netherlands, NLR, with the support of Eurocontrol, the European Organisation for the Safety of Air Navigation, and LVNL, the Dutch Air Navigation Service Provider.
A pair of Galileo test receivers was used aboard the aircraft, the same kind employed for Galileo testing in the field and in labs across Europe. They were connected to an aeronautical-certified triple-frequency Galileo-ready antenna mounted on top of the aircraft.
Tests were scheduled during periods when all four Galileo satellites were visible in the sky. The receivers fixed the plane’s position, as well as determining key variables such as the position, velocity, and timing accuracy; time to first fix; signal-to-noise ratio; range error; and range–rate error.
Testing covered both Galileo’s publicly available Open Service and the more precise, encrypted Public Regulated Service, whose availability is limited to governmental entities.
Flights covered all major phases: take off, straight and level flight with constant speed, orbit, straight and level flight with alternating speeds, turns with a maximum bank angle of 60 degrees, pull-ups and push-overs, approaches and landings.
The flights also allowed positioning to be carried out during a wide variety of conditions, such as vibrations, speeds up to 456 km/h, accelerations up to 2 ghorizontal and 0.5–1.5 gvertical, and rapid jerks. The maximum altitude reached during the flights was 3,000 meters.
GPS III Prototype Proves Constellation Compatibility
The Lockheed Martin prototype of the next-generation GPS satellite, the GPS III, has proven that it is backwardly compatible with the existing GPS satellite constellation in orbit.
During tests concluded on October 17, Lockheed Martin’s GPS III testbed successfully communicated via cross-links to Air Force simulators of the current GPS constellation in orbit. The current GPS constellation includes GPS IIR, GPS IIR-M, and GPS IIF satellites.
Testing also demonstrated the ability of an Air Force receiver to track navigation signals transmitted by the GPS III Nonflight Satellite Testbed (GNST). The GNST is a full-sized, functional satellite prototype at Cape Canaveral Air Force Station.
“These tests represent the first time when the GNST’s flight-like hardware has communicated with flight-like hardware from the rest of the GPS constellation and with a navigation receiver,” explained Paul Miller, Lockheed Martin’s director for GPS III Development. “This provides early confidence in the GPS III’s design to bring advanced capabilities to our nation, while also being backward-compatible.”
The first flight-ready GPS III satellite is expected to arrive at Cape Canaveral in 2014, for launch by the Air Force in 2015.
GPS III satellites will be the first GPS space vehicles with a new L1C civil signal designed to make it interoperable with other international global navigation satellite systems.
The GNST has helped to identify and resolve development issues prior to integration and test of the first GPS III flight space vehicle (SV 01). It has gone through the development, test, and production process for the GPS III program first, significantly reducing risk for the flight vehicles, improving production predictability, increasing mission assurance, and lowering overall program costs.
The GPS III team is led by the Global Positioning Systems Directorate at the U.S. Air Force Space and Missile Systems Center.
Lockheed Martin is the GPS III prime contractor, with teammates including ITT Exelis, General Dynamics, Infinity Systems Engineering, Honeywell, ATK, and other subcontractors.
Good News for Users and Manufacturers
The U.S. Air Force is directing transmission of continuous CNAV message-populated L2C and L5 signals starting in April 2014. The move is designed to help development of user equipment compatible with the civil signals. Full text of the CNAV memo appears below.
Galileo FOC Satellites Endure Simulated Space Tests
The European Space Agency’s newest Galileo satellite has emerged from five weeks of simulated space conditions. On November 29, a hatch slid open to end its thermal-vacuum test, a milestone on the way to orbit.
The satellite was placed in the 4.5-meter-diameter Phenix chamber in ESA’s ESTEC Test Centre in Noordwijk, the Netherlands, in late October. Once inside, the air was pumped out to create a space-quality vacuum. Temperature extremes were also reproduced, with the six copper walls of the thermal tent cooled by liquid nitrogen down to –180°C.
A second Galileo vehicle has been undergoing the same rigors at the site, along with a vibration and shock test to reproduce separation from the launcher. Thermal-vacuum testing on the second model will begin in early 2014. The two satellites will be launched on a Soyuz rocket from Europe’s Spaceport in French Guiana in mid-2014.
The next satellite is expected to arrive at ESTEC in March, with further satellites following every seven weeks or so. A total of 22 FOC satellites are being built by OHB in Germany, with navigation payloads being delivered from Surrey Satellite Technology Ltd. in the UK.
The first Galileo Full Operational Capability satellite emerges from the Phenix test chamber after five weeks of thermal–vacuum testing.
The U.S. Air Force is directing transmission of continuous CNAV message-populated L2C and L5 signals starting in April 2014. The move is designed to help development of user equipment compatible with the civil signals. Full text of the CNAV memo appears below.
MEMORANDUM FOR THE NATIONAL COORDINATION OFFICE FOR SPACE BASED POSITIONING, NAVIGATION AND TIMING
ATTENTION: DR. JAN BRECHT-CLARK
FROM: AFSPC/CC
Peterson AFB CO
SUBJECT: Early Civil Navigation (CNAV) Message-Populated L2C and L5 Signals
I have directed transmission of continuous CNAV message-populated L2C and L5 signals prior to fielding the Next Generation Operational Control Segment. This provision of populated signals will facilitate development of compatible user equipment and a CNAV Operations Concept.
The message-populated broadcast is projected to begin April 2014. Users should expect initial CNAV signal accuracy to be less than the legacy signals. Upon full implementation in December 2014, CNAV signal accuracy should meet or exceed the legacy signals.
Air Force Space Command is committed to ensuring GPS remains the world’s gold standard for PNT services. The user community can anticipate additional information on CNAV message implementation in the months preceding the initial April broadcast.
Artist’s concept of the nextgen GPS III satellite (courtesy of the USAF).
Lockheed Martin and Raytheon Company successfully completed the third of five planned launch and early orbit exercises to demonstrate the launch readiness of the world’s most powerful and accurate Global Positioning System (GPS), the U.S. Air Force’s next-generation GPS III satellite and Operational Control System (OCX).
Successful completion of Exercise 3, on August 1, was a key milestone demonstrating Raytheon’s OCX software meets mission requirements and is on track to support the launch of the first GPS III satellite, being produced by Lockheed Martin. Two additional readiness exercises and six 24/7 launch rehearsals are planned before launch of the first GPS III satellite in 2015.
Using new installments of Raytheon’s OCX software and Lockheed Martin’s GPS III Launch and Checkout Capability (LCC), the Air Force Global Positioning System Directorate and the industry team completed a launch and early orbit exercise over a three-day period in late July. Exercise 3 demonstrated space-ground communications; first acquisition and transfer orbit sequences; orbit-raising maneuver planning and execution; and basic anomaly detection and resolution capabilities. In addition, the industry and customer teams jointly executed mission planning activities, such as orbit determination and the generation of upload command files.
Exercise 3 expands on two previous exercises, with a longer mission timeline, and the introduction of simulated vehicle and ground anomalies to evaluate the combined response capabilities of the control segment, satellite and operations crew. “Successful completion of Exercise 3 clearly demonstrates that OCX is on track to support the first GPS III satellite launch,” stated Matt Gilligan, a vice president with Raytheon’s Intelligence, Information and Services business and Raytheon’s GPS OCX program manager. “The system responded as designed, and met all of the launch exercise success criteria and successfully demonstrated our anomaly response.”
“Exercise 3 demonstrated that the cross-organizational operations team is on track to support successful GPS III launch and on-orbit checkout missions from our Newtown facility,” said Keoki Jackson, vice president of Lockheed Martin’s Navigation Systems mission area. “I look forward to the team’s continued success as they progress through the complex mission readiness program towards the first GPS III launch.”
The Lockheed Martin-developed GPS III satellites and Raytheon‘s OCX are critical elements of the U.S. Air Force’s effort to modernize the GPS enterprise more affordably while improving capabilities to meet the evolving demands of military, commercial and civilian users worldwide.
GPS III satellites will deliver three times better accuracy; provide up to eight times more powerful anti-jamming capabilities; and include enhancements which extend spacecraft life 25 percent further than the prior GPS block. The GPS III also will carry a new civil signal designed to be interoperable with other international global navigation satellite systems, enhancing civilian user connectivity. The spacecraft bus and antenna assemblies for the first GPS III satellite have been delivered to Lockheed Martin’s GPS III Processing Facility and are in the integration and test flow leading to the planned space vehicle delivery in mid-2014.
OCX is being developed in two Blocks using a commercial best practice iterative software development process, with seven iterations in Block 1 and one iteration in Block 2. Exercise 3 was conducted using the recently completed Iteration 1.4 software. Exercise 4, scheduled for early 2014, will use Iteration 1.5 software, which includes the Launch and Checkout System capability as well as all critical information assurance features needed to support launch of the first GPS III satellite.
GPS Source announced today that GLI-FLO has been granted security approval by the U.S. Air Force Global Positioning Systems Directorate. The GPS Directorate security approval provides GPS Source with the opportunity to supply military end-users and prime contractors with a DAGR Distributed Device (D3) that meets the mandate for reliability and security, GPS Source said.
GLI-FLO is a secure (ICD-GPS-153 compliant) GPS position, navigation, and timing (PNT) distribution device. One GLI-FLO has the same capability as four DAGRs operating in a platform mounted application (eight DAGRs with custom cabling). GLI-FLO serves ICD-GPS-153 PNT data simultaneously to multiple communication or weapon systems that require GPS information. It routes PNT data while secured in the bracket now used by the DAGR, utilizing standard DAGR accessory cables. When GLI-FLO is connected to one DAGR (or as alternative option, interfaces with an internal secure GPS receiver), secure PNT data can be distributed without the integration of GB-GRAM cards to multiple devices.
GLI-FLO meets the stringent requirements for reliability and security by integrating a GPS Directorate-approved SAASM receiver (Selective Availability/Anti-Spoofing Module). SAASM is the security architecture selected by the Joint Chiefs of Staff (JCS) to provide current security functions for GPS-authorized military users.
“We understand the importance of reliable GPS/PNT data for synchronizing military operations and the need to protect against jamming and/or spoofing,” said Robert Horton, CEO of GPS Source. “We further realize the importance of protecting our national assets by designing products that fully comply with all GPS Directorate security requirements. This security approval makes it possible for our GLI-FLO to be deployed by military forces without reservation.”
In addition to the SAASM compliance, other GLI-FLO features include the ability to serve ICD-GPS-153 PNT data simultaneously to multiple communications or weapon systems that require secure GPS information. It is a significant step for GPS Source toward compliance in GPS Signal Distribution (Single PNT Distribution Point). With zero impact to subscriber application software/hardware, it removes the need to rely on multiple, expensive GB-GRAMS found in military platforms.
Northrop Grumman Corporation has been awarded a phase two inertial navigation system-related contract from the Air Force Research Laboratory to continue improving geo-registration accuracy for positioning and pointing applications, even in GPS-denied conditions.
Geo-registration of data is critical for accurate interaction between systems, such as locating targets and handing off coordinates to another aircraft. Geo-registration of images involves pairing unreferenced images with the physical locations or exact coordinates of depicted items. This allows aircraft to create accurate maps by stitching together photos and correlating them with their world-based locations, which is useful for intelligence gathering and targeting.
In phase one of the Maintain Accurate Geo-registration via Image-nav Compensation (MAGIC) program, Northrop Grumman integrated geo‑registration algorithms in a vision-aided inertial navigation system that can even operate in GPS-denied conditions. In phase two, the contractor will flight-test the integrated system as well as incorporate additional improvements such as highly detailed 3-D map generation in the algorithm.
“Our positioning and geo-registration solution will help to precisely locate our own aircraft positions and target locations, particularly in challenging, high-threat environments where the adversary might be jamming GPS,” said Charles Volk, vice president of Northrop Grumman’s Advanced Navigation Systems business unit. “Additionally, this will increase the situational awareness of warfighters and help to keep them safer.”
Partnered with Toyon Research Corporation, Northrop Grumman is building on its experience in vision-aided inertial navigation under past programs such as Collaborative Robust Integrated Sensor Positioning, which matched image features and processed visual motion estimations for precise navigation without relying on GPS.
The MAGIC program’s objective is to develop and demonstrate advanced real-time geo-registration and navigation algorithms using a combination of cameras, an inertial measurement unit and GPS information (when available). The program aims to capitalize on recent advances in the availability of low-size, -weight, -power and -cost camera systems that make the inclusion of camera information in navigation and geo‑registration systems for airborne vehicles a significant opportunity.
