GPS Modernization

The System: OCX, GPS III Show Launch Readiness

October 1, 2012By
GPS III SATELLITE, artist’s rendering, courtesy Lockheed Martin.

Raytheon Company and Lockheed Martin successfully completed the first launch readiness exercise for the U.S. Air Force’s next-generation GPS III satellites. The exercise is a key milestone demonstrating the team remains on schedule to achieve launch availability in 2014, the companies said. The Lockheed Martin-built GPS III satellites and the Raytheon-developed next generation GPS operational control system, known as OCX,... read more

This article is tagged with and posted in Augmentation & Assistance, BeiDou/Compass, Galileo, GNSS, GPS Modernization, OEM, The System

Expert Advice: PNT for the Nation

October 1, 2012By

Three Key Attributes and Nine Druthers By Brad Parkinson. Position, navigation, and time (PNT) are essential enablers for warfighter capabilities. They are used in virtually every weapons system of the Department of Defense. The GPS system has become the ubiquitous provider of this military service. In addition, GPS is the backbone of scores of civil applications that have provided startling... read more

Out in Front: The Bronze Prize for Golden Success

October 1, 2012By

We have heard it before, in various fora and in various forms: the GPS program is a victim of its own success. Because the satellites are living so long, launches of new, modernized space vehicles get deferred. And deferred. And deferred. The U.S. Congress meanwhile, for whom “defer” is a code to live by, happily pounces on this as an... read more

This article is tagged with and posted in From the Editor, GNSS, GNSS Opinions, GPS Modernization

Lockheed, Raytheon Complete First Launch Exercise for Next-Gen GPS Satellites

September 11, 2012By

Raytheon Company and Lockheed Martin have successfully completed the first launch readiness exercise for the U.S. Air Force’s next generation GPS III satellites. The exercise is a key milestone demonstrating the team remains on schedule to achieve launch availability in 2014, the companies said. The Lockheed Martin-built GPS III satellites and the Raytheon-developed next generation GPS operational control system, known... read more

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

Upcoming Navigation Satellite Launches Scheduled

September 11, 2012By

News courtesy of CANSPACE listserv.   Launch dates this fall for GNSS satellites are as follows, according to various sources: Compass M2 and M5: September 18, 18:12 UTC (speculative); Compass G6: No earlier than October 1. GSAT-10 (includes a GAGAN SBAS transponder): September 21. GPS IIF-3: October 4, 2012. Launch window: 12:10-12:29 UTC. Galileo IOV FM3 and FM4: October 10,... read more

This article is tagged with and posted in Augmentation & Assistance, BeiDou/Compass, Galileo, GLONASS, GNSS, GNSS News, GPS Modernization

The System: Next GPS IIF in October

September 10, 2012By

Next GPS IIF in October The next GPS satellite, Block IIF-3 (SVN65), scheduled to be launched on October 4, will be positioned in orbital slot 1, which is in plane A. This slot is currently occupied by a Block IIA satellite, SVN39, operating as PRN09. SVN39 is one of the oldest operating satellites in the GPS fleet, dating from June... read more

This article is tagged with and posted in Augmentation & Assistance, BeiDou/Compass, Galileo, GLONASS, GNSS, GPS Modernization

Next GPS IIF Satellite Launch Expected October 4

August 20, 2012By

Spaceflight Now is reporting that the next GPS satellite, Block IIF-3 (SVN65) to be launched on October 4, 2012, will be positioned in orbital slot 1, which is in plane A. This slot is currently occupied by a Block IIA satellite, SVN39, operating as PRN09. SVN39 is one of the oldest operating satellites in the GPS fleet, having been launched on June 26, 1993. read more

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

GPS SVN49 Resumes Transmissions Using PRN24

August 13, 2012By

The GPS Block IIR-M satellite, SVN49, resumed transmissions as PRN24 at about 18:35 UTC on August 9, 2012. The signals are marked unhealthy and the satellite is not included in broadcast almanacs. SVN49 was launched on March 24, 2009 but remains out of service until an L1/L2 satellite multipath issue is resolved. read more

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