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January 16, 2008

AFIT Releases GPS System Engineering Case Study

While awaiting the arrival of the definitive history of the Global Positioning System, students of the premier GNSS program might want to take a look at a systems engineering case study released last month by the Center for Systems Engineering at the Air Force Institute of Technology (AFIT), Wright-Patterson AFB, Ohio.

January 6, 2008

Galileo's GIOVE-B to Launch April 14

The first Galileo experimental satellite, which marked its second anniversary in space on December 28, may soon have company.

Designated the Galileo In-Orbit Validation Element–A (GIOVE-A) satellite, the spacecraft has been broadcasting a variety of signals since January 2006, using on-board rubidium clocks for time-tagging signal transmissions. Now, GIOVE-B — the larger second experimental satellite, which will carry one hydrogen maser and two rubidium clocks, is nearing readiness for transfer to the Russian Baikonur launch facility in Kazakhstan.

January 5, 2008

Moscow SatNav Forum 2008

Coming on the heels of two successful launches of six GLONASS spacecraft in recent months, the second edition of Russia’s International Satellite Navigation Forum will take place April 7–8 in Moscow at the Russian Academy of Sciences.

The event follows a successful inaugural conference in April 2007, which drew a wide range of government and commercial participants. A commercial exhibition will accompany the forum, which will have simultaneous translation available in English.

January 2, 2008

DoD Issues 'Roadmap' for Unmanned Systems

A 25-year (2007-2032) U.S. Department of Defense (DoD) roadmap for unmanned systems reflects the critical contribution of GPS technology in a growth area for tactical military systems that are simultaneously seeking a compatible place in civil applications and the national air space.

December 26, 2007

Russia Stays on Schedule with Latest GLONASS Launch

Launch of three GLONASS satellites on December 25 has met the terms and schedule of a presidential initiative to have 18 of the Russian GNSS space vehicles (SVs) on orbit and operational by the end of 2007.

December 20, 2007

Additional GPS IIR-M Satellite Launched, Quickly Begins Transmitting

The U.S. Air Force launched the fifth modernized GPS Block II Replenishment (IIR-M) satellite at 3:04 p.m. EST (20:04 UTC) December 20 from Cape Canaveral Air Force Station, Florida, (December 20) aboard a United Launch Alliance Delta II rocket. Air Force controllers set the spacecraft to "healthy" status on January 2, in what is probably a record time of 13 days.

December 10, 2007

China to Reveal Compass Plans ‘Soon’

China will release details of its Compass (or Beidou 2) program “soon,” including an Interface Control Document (ICD) for the GNSS system’s open civil service and a launch schedule for additional satellites, according to representatives of the China Satellite Navigation Engineering Center speaking at the Shanghai Navigation Forum (NaviForum) in Shanghai on Thursday and Friday (December 6-7).

December 6, 2007

Three More GLONASS Satellites Come On-Line

Russia’s space forces had an easier time of it bringing the latest set of GLONASS-M satellites on line within just over a month after launch.

As of December 6, the GLONASS constellation had 15 operational satellites, two of which are not broadcasting signals during maintenance. The next launch of three modernized GLONASS space vehicles is scheduled for December 25.

December 3, 2007

Transport Ministers Put Galileo Back on Track

On Friday (November 30), the European transport council voted unanimously to adopt a European Commission (EC) financial scheme that would lead to a fully operational constellation in 2013, if the project can stay on schedule.

December 1, 2007

India’s GAGAN Passes Its Final Test

The Raytheon Company has announced that it successfully completed the final system acceptance test to augment standard GPS signals over India.

GAGAN stands for GPS Aided GEO Augmented Navigation-Technology Demonstration System. It monitors GPS satellite signals for errors and then generates correction messages to improve positioning accuracy for users.

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