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June 2, 2011

Lt. Gen. Ellen Pawlikowski: First Woman to Assume Command of SMC, Home of GPS Directorate

On Friday (June 3, 2011), Lt. Gen. Ellen M. Pawlikowski will assume command of the Space and Missile Systems Center at Los Angeles Air Force Base, California, where the GPS Directorate is located along with other space-related program offices.

May 28, 2011

Make GPS Robust, Says 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.

Entitled “Satellite Navigation & Space Weather: Understanding the Vulnerability & Building Resilience,” the report is based on a workshop organized by the AMS and held October 13–14, 2010 in Washington, D.C.

May 28, 2011

Test Results: LightSquared Would Cause Serious Interference to GPS Receivers

Tests of GPS receiver vulnerability to transmissions from terrestrial base stations in the proposed LightSquared 4G/LTE broadband service were scheduled to wrap up on May 27, but results as we post this message clearly indicate substantial adverse effects on GPS user equipment.

On June 1–2, the Technical Working Group (TWG) set up by the LightSquared-led working group mandated by the Federal Communications Commission (FCC) will have its first face-to-face meeting since the trials began to sort out the results.

May 27, 2011

GPS Modernization on Agenda for June Space-Based PNT Advisory Board Meeting

The National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board will meet in Arlington, Virginia, on Thursday, June 9 and Friday June 10. The sessions are open to the public.

Among the agenda items are GPS modernization, interoperability with other GNSS systems, and future challenges to PNT service providers and users, such as protecting the emerging role of PNT in cyber networks, including the need for backups.

May 27, 2011

Congress Moves to Protect GPS Users from LightSquared Interference

The Federal Communications Commission (FCC) report on the level of interference between LightSquared’s proposed mobile broadband network and GPS receivers is due in a couple of weeks. Meanwhile, the fight over final approval of the system has rolled into the halls of Congress.

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.

May 27, 2011

RTCA Report Show Serious LightSquared Interference to GPS Aviation

An executive summary of a special report by RTCA Inc. Special Committee 159 released today (May 27, 2011) indicates that GPS aviation receivers would experience serious interference from transmission planned by LightSquared in the upper portion of the 1525–1559 MHz spectrum adjacent to the GPS L1 band.

May 23, 2011

European Space Agency Sets Date for First Galileo Satellite Launch

After many delays, two European navigation satellites will take a ride on a Soyuz launcher to middle earth orbit from Europe's space center in Kourou, French Guiana on October 20 2011. If all goes well, this will begin the operational phase of Galileo, Europe's GNSS.

May 22, 2011

Successful Launch on May 21 for ISRO's GAGAN Navigation Satellite

India's first GAGAN navigation payload on the GSAT-8 communications satellite was launched successfuly at 02:08 hrs IST on Saturday, May 21 2011, according to the Indian Satellite Research Organization (ISRO)

May 20, 2011

China Plans Another Eight Compass/BeiDou Lanches by End of 2012

According to a May 19 People’s Daily report, China will launch another eight Beidou navigation satellites before the end of next year.

Speaking at the second Chinese Satellite Navigation Academic Annual Meeting in Shanghai on May 18, Ran Chengqi, the director of the Chinese Satellite Navigation Administrative Office, said the overall testing of the Compass/BeiDou satellite navigation system will be finished on Oct. 10, 2011.

May 15, 2011

GPS Technology and People Behind Gravity Probe B's Einstein Relativity Experiment

NASA's May 3 announcement that its long-running Gravity Probe B (GP-B) mission had confirmed two key predictions derived from Albert Einstein's general theory of relativity, mentioned GPS autoland techniques as one of the projects spinoffs.

However, the involvement of GPS technology and GPS experts in the mission was much deeper than the passing reference in a press release.

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