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《Acta Geodaetica et Cartographica Sinica》 2008-01
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Design and Realization of GALILEO Local Integrity Monitoring

ZHAO Chun-mei, CHENG Peng-fei , GAO Xing-wei Institute of Geodesy and Geodynamics, Chinese Academy of Surveying and Mapping, Beijing 100039, China; The Key Laboratory of Geomatics and Digital Technology, Qingdao 266510, China  
According to the GALILEO local integrity concept and the basic theory of network RTK, the local integrity monitoring theory and algorithm of global navigation system, which consists of network integrity algorithm and user integrity algorithm, are established. The research involves constructing network error model, choosing interpolation method, computing and validating integrity index for error correction, calculating user protection level. Simulation result reveals that both horizontal protection level and vertical protection level are smaller than integrity alert limit, which means that the integrity requirement for CAT-Ⅱand CAT-Ⅲprecise approach of plane can be satisfied. The algorithm and result in this article offer an integrity basis for satellite navigation system application in aviation.
【Fund】: 国家自然科学基金项目(40504003);; 山东省基础地理信息与数字化技术重点实验室开放基金项目(SD060812);; 中国测绘科学研究院基本科研项目
【CateGory Index】: P228.4
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