GPS

First Look: Initial Observations of the GPS L5 Broadcast and L1 Signal Anomaly
May 22, 2009

First Look: Initial Observations of the GPS L5 Broadcast and L1 Signal Anomaly

(Updated May 22, 2009) Leading researchers from Ohio University, Stanford, and the University of Colorado have released their initial observations of the GPS L5 signal broadcast, including an anomaly in SVN49’s L1 signal reported by the GPS Wing’s chief engineer on May 4.

The U.S. Air Force switched on the eagerly awaited, modernized L5 signal on April 10 after the successful launch of the newest GPS Block IIR-M satellite – SVN49 – in March. This was the first broadcast of a GPS signal in a frequency band dedicated solely for civilian use.

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By Inside GNSS
New Leaders to Gather for First Obama-Era PNT ExCom Meeting
May 21, 2009

New Leaders to Gather for First Obama-Era PNT ExCom Meeting

Mike Shaw, NCO Executive Director

A June 18 meeting of the National Space-Based Positioning, Navigation, and Timing (PNT) Executive Committee (ExCom) will bring together leaders of the Obama administration in the key interagency setting for GPS issues.

Established under a 2004 National Presidential Security Directive, the ExCom advises and coordinates federal departments and agencies on matters concerning the Global Positioning System and related systems. The deputy secretaries of defense and transportation and co-chair the committee, which includes equivalent-level members from seven other federal agencies.

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By Inside GNSS
GPS III Passes Preliminary Design Review

GPS III Passes Preliminary Design Review

GPS IIIA. Lockheed Martin graphic

The Lockheed Martin team developing the next-generation GPS III satellites has successfully completed a major program milestone, the preliminary design review (PDR) conducted by the U.S. Air Force’s GPS Wing.

Underlining the importance placed on meeting a 2014 first-launch schedule, nearly 150 representatives from the GPS Wing and user communities, including representatives from the Department of Defense, the Joint Chiefs of Staff, Air Force Space Command, the Department of Transportation, and the Federal Aviation Agency participated in the four-day Space Vehicle PDR at Lockheed Martin Space Systems facilities in Newtown, Pennsylvania.

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By Inside GNSS
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Telematics Detroit 2009
May 16, 2009

Telematics Detroit 2009

The Telematics Detroit 2009 Conference & Exhibition covers the digital in-car and mobile industries. It will take place on June 2-3 at The Rock Financial Showplace in Novi, Michigan.

The event features senior-level speakers from Ford, Toyota, TomTom, Yahoo!, Garmin, Panasonic, Garmin, U.S. Department of Transportation, Visteon, Google and others.

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By Inside GNSS
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GPS SVN49 and L5 Signal: A Success with Problems
May 5, 2009

GPS SVN49 and L5 Signal: A Success with Problems

Block IIR-M satellite. Lockheed Martin photo.

Signal anomalies characterized by the U.S. Air Force as “out of family” transmissions will keep the latest GPS satellite from being declared healthy for months, if ever.

The report on space vehicle number (SVN) 49 by the GPS Wing’s chief engineer, Lt. Col. David Goldstein to the European Navigation Conference in Naples, Italy, on May 4 mixed bad news with glad.

Also known as Block IIR-20(M), the spacecraft carries the demonstration payload for the new civil GPS L5 signal. The March 24 launch probably represented the last chance to meet an International Telecommunications Union (ITU) deadline for securing primary rights to use of the RF band by GPS.

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By Inside GNSS
Obama Lifts Up GPS in Speech to U.S. Scientists
April 28, 2009

Obama Lifts Up GPS in Speech to U.S. Scientists

In his April 27 speech to the National Academy of Sciences (NAS) annual meeting, President Barack Obama twice singled out the Global Positioning System as an example of the need for renewing the U.S. commitment to basic scientific research and education.

“The calculations of today’s GPS satellites are based on the equations that Einstein put to paper more than a century ago,” Obama said, having noted that “no one can predict what new applications will be born of basic research. . . .”

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By Inside GNSS
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