GPS Precise Point Positioning with the Japanese Quasi-Zenith Satellite System LEX Augmentation Corrections

作者: Suelynn Choy , Ken Harima , Yong Li , Mazher Choudhury , Chris Rizos

DOI: 10.1017/S0373463314000915

关键词: Satellite navigationSatelliteGeographySignalGlobal Positioning SystemPrecise Point PositioningSatellite systemRemote sensingGNSS applicationsQuasi-Zenith Satellite SystemReal-time computing

摘要: The Japanese Quasi-Zenith Satellite System (QZSS) is a regional satellite navigation system capable of transmitting signals that are compatible and interoperable with other Global Navigation Systems (GNSS). In addition to signals, QZSS also transmits augmentation e.g. the L-band Experimental (LEX) signal. LEX signal unique for in delivering correction messages such as orbits clock information enable real-time Precise Point Positioning (PPP). This study aims evaluate availability well quality broadcast PPP applications. tested both static kinematic positioning modes. results show 60% when elevation at 30° above 90% 40° elevation. Centimetre-level position accuracy can be obtained processing after two hours convergence using current MADOCA-LEX (Multi-GNSS Advanced Demonstration Orbit Clock Analysis) transmitted on signal; decimetre-level point processing.

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