测绘科学技术学报2011，Vol.28Issue(1)：1-4,4.DOI:10.3969/j.issn.1673-6338.2011.01.001
基于卫星服务中断的GPS在中国服务区可用性分析
Analysis of Availability of GPS in China Territory Volume Based on Satellite Service Intermittence
摘要
Abstract
Due to hard failures and satellite orbit maintenance, etc, satellite service intermittence happens, which reduces the availability of navigation constellation. The availability model of satellite and constellation was set up based on the Means Time Between Failures (MTBF) and the Mean Time To Repair (MTTR), which was able to evaluate objectively navigation constellation performance. The number of the visible satellites and the PDOP(Position Dilution of Precision) availability of GPS were discussed and calculated in detail in China terrestrial service volume based on four types satellite's intermittence. The simulation result was very useful for COMPASS construction nowadays and for China GPS user.关键词
导航星座/服务中断/可见星数/单星可用性/星座可用性Key words
navigation constellation/ service intermittence/ visible satellite numbers: satellite availability: constellation availability分类
天文与地球科学引用本文复制引用
李国重,李军正,李建文,归庆明..基于卫星服务中断的GPS在中国服务区可用性分析[J].测绘科学技术学报,2011,28(1):1-4,4.基金项目
国家自然科学基金资助项目(40474007,40974009) （40474007,40974009）
河南省基础与前沿技术研究计划资助项目(082300410240) （082300410240）
郑州市科技计划公关资助项目(0910SGYG21198). （0910SGYG21198）
