GPS Modernization

Building a Wide-Band Multi-Constellation Receiver

March 1, 2013By
G-opener

The authors designed a full-constellation GNSS receiver, using a cost-effective, readily available, flexible front-end, wide enough to capture the frequency from 1555 MHz to 1607 MHz, more than 50MHz. This spectrum width takes into account BeiDou E2, Galileo E1, GPS L1, and GLONASS G1. In the course of their development, the authors used an external OCXO oscillator as the reference clock and reconfigured the platform, developing their own custom wide-band firmware. read more

The System: GPS Alliance, Galileo Budget, EGNOS Safe Skies

March 1, 2013By

New Organization Advocates for GPS Industry; Galileo Lives to Fly Another Day, Budget Passed; Safer Skies for EGNOS; and GLONASS in Brazil New Organization Advocates for GPS Industry A new group, the GPS Innovation Alliance, has formed and announced itself as the voice of the U.S. GPS industry and community of users, to “support the ever-increasing importance of GPS” in... read more

This article is tagged with and posted in Galileo, GNSS, GPS Modernization, The System

Air Force Awards Lockheed Martin Contracts for Next Set of GPS III Satellites

February 26, 2013By
GPS-III-AHI-O

The U.S. Air Force has awarded Lockheed Martin two fixed-price contracts totaling $120 million to procure long lead parts for the fifth, sixth, seventh and eighth next-generation GPS III satellites. The GPS III program will replace aging GPS satellites while improving capability to meet the evolving demands of military, commercial and civilian users. GPS III satellites will deliver better accuracy... read more

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New Organization Advocates for GPS Industry

February 25, 2013By

A new group, the GPS Innovation Alliance, has formed and announced itself as the voice of the U.S. GPS industry and community of users, to “support the ever-increasing importance of GPS” in the U.S. capital, Washington, D.C.  The organization subsumes and replaces both the U.S. GPS Industry Council, an entity of longstanding, and the Coalition to Save Our GPS, which... read more

Brecht-Clark Replaces Russo as PNT Coordination Office Director

February 11, 2013By

Dr. Jan Brecht-Clark is the new director of the National Coordination Office for Space-Based Positioning, Navigation, and Timing. She has held the post since December 17, 2012. The previous director, Anthony Russo, is now the chief program engineer in the Space Communications and Navigation Division of NASA. The National Coordination Office for Spaced-Based PNT is the permanent staff of the... read more

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Lockheed Martin Completes GPS III Flight Software Milestone

February 6, 2013By
GPS-III-AHI-O

The Lockheed Martin team developing the U.S. Air Force’s next generation Global Position System III satellites has completed a key flight software milestone validating the software’s ability to provide reliable and effective command and control for the GPS III satellites planned for launch into orbit. The GPS III program will affordably replace aging GPS satellites, while improving capability to meet... read more

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Exelis Wins Air Force Contract to Research Low-Cost GPS Alternatives

January 23, 2013By

ITT Exelis has been awarded a $2.15 million contract by the Air Force Research Laboratory (AFRL) to research the development of a small satellite navigation payload to augment the current GPS program. The GPS NAVSAT (Navigation Satellite) program seeks to provide affordable capabilities to aid end-users located in tough-to-reach environments. “The development of smaller satellites — in terms of size,... read more

This article is tagged with and posted in GNSS, GNSS News, GPS Modernization, Latest News

Launch of GPS Satellite Struggled through Tense Moments

December 10, 2012By
United Launch Alliance Delta IV rocket blasts off from Space Launch Complex-37 with the U.S. Air Force’s Global Positioning System (GPS) IIF-3 satellite. This launch marks the 9th ULA launch this year, the 54th Evolved Expendable Launch Vehicle (EELV) mission, and the 65th launch since ULA was formed nearly six years ago.

A new report by Spaceflight Now reveals that the launch October 4 of a GPS satellite experienced tense touch-and-go moments. The Delta 4 rocket’s cryogenic upper stage engine experienced a fuel leak that caused a low-thrust condition. Four-and-a-half minutes into the launch, after the first stage had shut down and separated, the trouble began as the RL10B-2 engine on the... read more

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