GPS

Completion of Satellite Repositioning Optimizes GPS Constellation

Completion of Satellite Repositioning Optimizes GPS Constellation

Successful  completion today (June 15, 2011) of the rephrasing of the GPS constellation known as “Expandable 24,” has produced the most optimal geometry in the system’s 42-year history, maximizing GPS coverage for all users worldwide.

The 2nd Space Operations Squadron (2 SOPS) of the 50th Space Wing at Schriever Air Force Base, Colorado, successfully executed the two-phase expansion and repositioning of satellites, which improves global GPS coverage and provides a more robust signal and higher probability of signal acquisition in terrain-challenged environments.

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By Inside GNSS
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Bliley Launches New GPS Frequency and Timing Modules

Bliley Launches New GPS Frequency and Timing Modules

Bliley GMX1001

Bliley Technologies, Inc., has unveiled two GPS frequency and timing modules at the 2011 IEEE MTT-S International Microwave Symposium taking place this week (June 5–10, 2011) in Baltimore, Maryland.

The company’s GMX1001 and GMM1002 modules launch a new product line for the company — introducing the first in a series of next-generation technologies for the Erie, Pennsylvania–based company.

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By Inside GNSS
LightSquared GPS Interference Controversy Headlines National PNT Advisory Board Meeting
June 8, 2011

LightSquared GPS Interference Controversy Headlines National PNT Advisory Board Meeting

The Space-Based PNT National Coordination Office is located in the Dept. of Commerce Hoover Building

Representatives from the Federal Aviation Administration (FAA), LightSquared, and Trimble will weigh in on the GPS vs. LightSquared interference at the afternoon session of a National Space-Based Positioning, Navigation and Timing (PNT) Advisory Board meeting tomorrow (June 9, 2011).

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By Dee Ann Divis
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Qualcomm Adds GLONASS Capability to Chipsets
June 6, 2011

Qualcomm Adds GLONASS Capability to Chipsets

Qualcomm Incorporated has announced the company’s product support for the Russian GLONASS satellite system to enable the use of both GPS and GLONASS networks simultaneously for improved location performance.

The first GLONASS-capable phone is the MTS 945 from Chinese phone manufacturer ZTE developed with Russian chipset manufacturer AFK Sistema and powered by Qualcomm’s Snapdragon MSM7x30 chipset.

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By Inside GNSS
Test Results: LightSquared Would Cause Serious Interference to GPS Receivers
May 28, 2011

Test Results: LightSquared Would Cause Serious Interference to GPS Receivers

Las Vegas site for LightSquared/GPS tests

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.

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By Inside GNSS
Congress Moves to Protect GPS Users from LightSquared Interference
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.

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By Dee Ann Divis
GPS Modernization on Agenda for June Space-Based PNT Advisory Board Meeting

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.

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By Inside GNSS
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