Raytheon Company, UK successfully completed the Preliminary System Acceptance Test for the GPS Aided GEO Augmented Navigation- Technology Demonstration System (GAGAN-TDS). "This test was significant because the GAGAN-TDS ground elements supplied by Raytheon were installed and integrated ahead of schedule," said Andy Zogg, Vice President of Raytheon's Airspace Management and Homeland Security Business. "More importantly, the system functioned properly and exceeded the accuracy requirements.

The GAGAN-TDS network monitors the Global Positioning Satellite signals for errors and then generates correction messages to improve the accuracy of endusers' position solution.

During the test period, average accuracy was better than one meter (3.3 feet) horizontally and only slightly more than one meter vertically, thus surpassing the 7.6 meter (25 feet) requirement by a significant margin. GAGAN-TDS is the first phase of a project sponsored by the Indian Space Research Organization (ISRO) and Airports Authority of India (AAI) to implement a space-based navigation system in Indian airspace. www.prnewswire.com

Lockheed Martin has completed the fifth in a series of eight modernized GPS IIR satellites that the company is developing for the US Air Force. The spacecraft are the most technologically advanced GPS satellites ever developed and will provide significantly improved navigation performance for US military and civilian users worldwide. The modernized program, known as GPS IIR-M, is being performed at Lockheed Martin's facilities in Valley Forge, Pa., and ITT Industries in Clifton, N.J.
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