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GMV Receives Contract to Develop GAGAN Receiver Algorithm

January 19, 2010

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Raytheon Company has awarded a new contract to GMV to develop a prototype algorithm to mitigate ionospheric effects on users of India’s GAGAN (Global Positioning Satellite-Aided Geosynchronous Augmented Navigation System),

The algorithm will detect ionospheric depletions in the magnetic equatorial region, providing data that may be used in GNSS receivers processing signals from GAGAN, a satellite-based augmentation system (SBAS) under development by the Indian Space Research Organization (ISRO) and the Airports Authority of India.

GAGAN will provide satellite-based navigation for civil aviation across South and East Asia. The program is currently in its final operational phase, incorporating critical navigation components.

Raytheon has deployed various elements of the system, both in this and in earlier phases of the program. It recently signed a contract with ISRO for incorporating the necessary modifications in the system data processing, message generation and user receiver processing to increase the availability of precision approach guidance to civil aircraft using SBAS in the equatorial region.

Because of India’s location along the equatorial crest, ionospheric effects occur, which makes it difficult to predict and model navigation. GMV’s prototype algorithm will help detect depletions in the equatorial region. This algorithm will then be incorporated into receivers to help improve the safety performance for GAGAN users.

GMV expects to deliver its portion of the project in June 2010.

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