USA Challenge
May 2011


FCC WG Test Results: LightSquared Causes Serious Interference

[GNSS SIGNALS exclusive] Tests of GPS receiver vulnerability to transmissions from terrestrial base stations in the proposed LightSquared 4G/LTE broadband service clearly indicate substantial adverse effects on GPS user equipment. The tests are scheduled to wrap up late Friday (May 27). (more)

House Moves to Protect GPS Users from LightSquared Interference 

On Thursday (May 26) the House approved an amended 2012 Defense Authorization bill requiring the Federal Communications Commission to withhold full approval of the LightSquared 4G-LTE system and disallow operations until interference issues with military receivers are resolved. (more)

RTCA: Broadband transmissions Near L1 Put GPS Aviation at Risk

A special report by RTCA Inc. Special Committee 159 released on May 27 indicates that GPS aviation receivers would experience serious interference from LightSquared's planned transmission in the spectrum adjacent to the GPS L1 band. (more)


GPS Directorate Commander Talks About Modernization Times

A year into the job, the Col. Bernard Gruber tells how the nation's leading PNT program is working to synchronize modernization of the space, operational control, and user equipment segments. (more)

IFEN - The Leader in GNSS Test Solutions

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It's Time for the 2011 USA Challenge!

Once again, we ask for your satellite navigation-based apps, innovations and new products for the European Satellite Navigation Competition, of which the USA Challenge is a part. This year brings more prizes, opportunities and exposure for our winner. (more)


AMS Report on Satellite Navigation and Space Weather

A new report by the American Meteorological Society (AMS) highlights the vulnerability of GPS-dependent critical infrastructures to disruptions caused by solar flares and other space weather events, and sets forth a series of recommendations for building robustness of the GPS service. (more)


National Space-Based PNT Advisory Board Meets June 9-10

The National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board will meet in Arlington, Virginia, on Thursday and Friday of the first full week in June. The sessions are open to the public. (more)


Hybrid Positioning and Technology for Mobile Users

Inside GNSS brings you a free web seminar on June 9 with a panel of four experts from Skyhook, Spirent, Pinpoint Positioning and the University of Calgary's mobile multi-sensor systems research group. Register now!
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