TAG: LightSquared

The System: 2 SOPS Takes Over Second IIF

September 1, 2011By

The U.S. Air Force 50th Space Wing’s 2nd Space Operations Squadron took command and control of the second GPS Block IIF satellite on August 19. SVN-63 (PRN 01) was set healthy on August 23. The total of 12 next-generation GPS IIF satellites built by Boeing will provide improved accuracy through advanced atomic clocks, a longer design life than legacy GPS satellites, and a new signal, L5, that will benefit civil aviation and safety-of-life applications. The Space and Missile Systems Center’s GPS Directorate at Los Angeles Air Force Base remained in control of the satellite during a 30-day on-orbit check-out period before hand off. read more

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LightSquared: The Ball is in the FCC’s Court

August 18, 2011By

The FCC's public comment period regarding the LightSquared/GPS interference issue has ended and the reply comment period is over as well. To date, more than 3,300 comments were entered that the FCC must sift through and arrive at some sort of conclusion. Following are my last comments filed with the FCC as well as my best guess at where this is heading. read more

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Last Week’s Solar Storm and the Final LightSquared Push

August 10, 2011By

You may not have noticed it, but last Friday we experienced the first serious geomagnetic storm in this solar cycle (Solar Cycle 24), which began in 2009. Not all types of solar activity (sun spots, solar flares, solar burst, and solar radiation) affect GPS receiver operations. Geomagnetic storms are the ones that can cause problems for GPS receivers if those storms are powerful enough. read more

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Out in Front: A Pawn in Their Game

August 1, 2011By

Maybe we got played. But we put up a good fight. We really had no option to do anything but fight. So we did, and we’re still fighting the LightSquared attack on the GPS signal. It’s not over yet, not by a long shot. Suspicions now creep in that the attack may have been a feint, that the company never really intended to do what it threatened: broadcast a very powerful signal from ground towers, on a frequency immediately adjacent to the GPS signal. LightSquared had its eye on another prize instead. read more

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The System: Technical Report on LS/GPS Interference

August 1, 2011By
Delta IV GPS2F-2 Rollback of Mobile Service Tower prior to launc

Once again, developments in the news outpaced print technology’s ability to keep up in the LightSquared saga. Shortly after the July issue went to press on June 27, the TWG final report appeared on June 30. Thus you readers, who received the magazine circa July 15, held old news in your hands. Likely this will occur again. read more

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Letters to the Editor

August 1, 2011By

August's letters to the editor. read more

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Expert Advice: Who Won?

August 1, 2011By

Thousands of man hours and millions of dollars later, we finally have the 975-page GPS Technical Working Group (TWG) report, confirming what five minutes of back-of-the-envelope calculation predicted. Hooray for our side, good job GPS Industry Council; we’ve won the war and the foe is vanquished, never to brighten our skies again. Well, maybe. LightSquared is now bypassing the Federal Communications Commission (FCC) and submitting technical papers directly to the United Nation’s International Telecommunications Union (ITU) Working Party that handles mobile satellite services (MSS) and radio determination satellite service (RDSS spectrum) and orbits (ITU-R WP 4C). read more

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LightSquared: Comments I Submitted to the FCC

July 28, 2011By

Okay, folks, this is where the rubber meets the road. The FCC LightSquared public comment period ends this Saturday. If you use GPS, it would be very wise to submit your comments today. Don't expect the FCC to make a rational decision. LightSquared has an amazing amount of political influence, and you can see that in the support they receive from state legislators, mayors, chiefs of police, etc. In this article, I'll show you how to submit your comments to the FCC in just five minutes. I'll also show comments I'm submitting to the FCC. read more

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