GPS Navigation May Fail Next Year

ErikStenger

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Although the Air Force is currently working on upgrading the current twenty-year-old system, the firm believes that its efforts to acquire new satellites may be too late to maintain the current GPS system without interruption. This is certainly not good news for millions of consumers and business that depend on GPS navigation on a day to day basis; the military would be just as affected if gaps were to occur, and could pose a problem with national security.

The firm points to a major problem with the internal management within the Air Force, claiming that there's no single point of authority for space programs, and that the frequent turnover in program managers have "hampered" resource allocation and funding stability for the GPS upgrade program. "If the Air Force does not meet its schedule goals for development of GPS IIIA satellites, there will be an increased likelihood that in 2010, as old satellites begin to fail, the overall GPS constellation will fall below the number of satellites required to provide the level of GPS service that the U.S. government commits to," said the firm.

As stated in the 15-page report, the Air Force has struggled to build successful GPS satellites on schedule and within the budget, encountering "significant" technical problems as well as dealing with a different contractor. Both roadblocks have thus delayed the launch of a new, replacement next-generation GPS satellite--scheduled to hit the outer atmosphere by November 2009--by almost three years. The current update program for the entire GPS constellation has already overshot its original budget limit by about $879 million.

For now, the current GPS constellation consists of 31 working satellites, many of which are four years older than their original life expectancy (only 3 satellites are needed to provide an accurate fix). The firm said that that there's a one in five chance that the constellation will drop below the minimum 24 satellites needed to cover the globe at various times between 2011 and 2012 (the same year aliens will invade the earth, the world will end, and the Internet will come to a screeching halt).

Meanwhile, as the American government struggles to keep its GPS system functional, other networks may take advantage of the situation. The Glonass Russian satellite system is the second largest GPS constellation, consisting of 19 operational satellites. China plans to launch an operational GPS system by 2011, and Europe's Galileo network, designed to rival the American GPS network, is scheduled to launch next year.

Although the US GPS system is virtually free to all American consumers and businesses (outside 3rd party applications, that is), the government plans to deposit a whopping $5.8 billion into the upgrade process over the next 5 years, addressing the individual satellites and ground control segments. However, despite the recent shortcomings in launching the first next-gen satellite, many GPS firms are naturally staying positive, reporting that there's nothing to worry about.

"We would agree with the notion that the GAO is admonishing the various government entities to work together so that... GPS service remains uninterrupted," Ted Gartner, a spokesman for Garmin, said in a statement. "There's no reason to fear that there will be a significant outage or service interruption."
 
AFSPC tweets on GPS

5/20/2009 - PETERSON AIR FORCE BASE, Colo. -- Air Force Space Command hosted a tweet forum on the Global Positioning System from 2 to 3 p.m., May 20. Col. Dave Buckman, AFSPC command lead for Position, Navigation and Timing, responded to fellow tweeter's questions on GPS and clarified some points that came out of the recent Government Accountability Office's report on potential challenges the GPS system faces in the future.

The session was the first time AFSPC has used their Twitter page, www.twitter.com/AFSpace, for a scheduled two-way forum. The site launched in April.

Below is the transcript:

1. Get the facts on GPS! Join us at 2 p.m. MST and hear from our expert! AFSpace hosts Colonel Buckman to answer your questions for all things GPS!

2. #AFGPS AFSpace is live with our GPS experts. Anyone want to kick off the questions?

3. JustinHerman@AFSpace #AFGPS: Is there any actual probability of the GPS systems going down in 2010, or is it just worst case scenario - like my commute?

4. @JustinHerman: No, the GPS will not go down. GAO points out, there is potential risk associated with a degradation in GPS performance.

5. OKCMark @AFSpace: Is it true that you just launched a satellite that doesn't work right?

6. @OKCMark: SVN-49 launched in March is still in payload c/o. Received unusual payload performance data. T-shooting & making good progress.

7. JustinHerman @AFSpace #AFGPS: If I may follow, what kind of upgrades at what $$ will be needed in order to maintain performance of the GPS system?

8. @JustinHerman: We're committed to the modernization of GPS. We already have two satellite programs underway to update our fleet. Agree w/ GAO there's a potential risk, but GPS isn't falling out of the sky-- we have plans to mitigate risk and prevent a gap in coverage.

9. TedDriver @AFSpace #AFGPS: What's the likelihood of user's noticing a difference in GPS accuracy? - which has been excellent so far...

10. @TedDriver: Very unlikely. We're launching satellites (next in Aug); have proven procedures to optimize constellation to mitigate impacts.

11. flukemol @AFSpace: If a major solar flare happens do you guys have a back up plan or backup GPS system ready?

12. @flukemol: Since we fly in MEO, aren't as affected by solar as sats in GEO; been thru several solar maxs in past with stellar performance.

13. TedDriver @AFSpace: Good to hear! Thanks for answering my questions. #AFGPS
14. Espen @AFSpace: Will the GAO report result in an acceleration of the acquisition and fielding of GPS Equipment?

15. @Espen: Uncertain, but we are always looking for opportunities to accelerate the modernization of GPS & deliver capabilities to users sooner.

16. JustinHerman @AFSpace #AFGPS: So basically, while there is a risk of reduced performance in the GPS fleet, we've pretty much got it covered?

17. @JustinHerman: You have it exactly right!

18. SRStran @AFSpace: Glad you're on top of it!

19. @SRStran: Thanks, we take great pride in providing GPS performance that exceeds our requirements!

20. SRStran @AFSpace: You're welcome. Like to think that the newly updated roads will be on my newly purchased GPS.

21. zoephoto @AFSpace: Glad to hear the GPS satellite issue is under control, you should make an announcement so the media stop scaring people! :)

22. @fenrisfox: We have 30+ satellites on orbit now. We'll launch another in Aug 09, and again early 10. Going below 24 won't happen

23. LINDAinNC RT @AFSpace: Agree w/ GAO thr's a potential risk, but GPS isn't falling out of the sky-- we have plans 2 mitigate risk & prevent a gap...

24. We are taking the last round of GPS questions for the next five minutes....

25. @lukeshepherd: We have the largest GPS constellation in history and active plans to mitigate any potential gap in coverage.

26. @zoephoto: You are exactly right, the issue is under control . We are working hard to get out the word.

27. @usmcpablo: The issue is not whether GPS will stop working. There's only a small risk we will not continue to exceed our performance standard

28. @weisen: We definitely need to keep this in perspective . Since 1995, GPS has never failed to exceed performance standards.

29. Thanks everyone...AFSpace is signing off the GPS discussion...for now.

(For those who are too lazy to read. AF Space Command Says Keep Buying GPS.)
 
the Air Force does have a space command. My friend was able to join it. He said all he does is watch a screen has satellites go by. He also tracks stuff for NASA so that the shuttle doesn't run in to a satellite. But over all he said it was really boring!
 
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