【作者】 谷守周； 秘金钟； 党亚民； 方书山；

【Author】 Gu Shouzhou~1,Bei Jinzhong~1,Dang Yamin~1,Fang Shushan~1 1.China Academy of Surveying and Mapping,28 Lianhuachi West Road,Beijing,China

【机构】 中国测绘科学研究院；

【摘要】 卫星钟差质量直接影响到高精度用户的定位结果,因此需对钟差实时监测,即为卫星钟差完备性监测。它是导航系统完备性理论体系中重要的组成部分。本文基于完备性监测的理念,基于GPS伪距,利用多个基准站计算卫星钟差,分析同一卫星多个站上观测值的残差,确定各卫星钟差的可用性,若某一卫星的观测值残差与其他卫星残差有显著差异,且超过限值,则认为该卫星钟差质量较差,应给出示警信息,实现卫星钟差的完备性监测。基于上述理论,分别同一时间基于不同网络数据进行卫星钟差完备性监测,并对比不同网络卫星钟差监测结果,验证该算法的可行性。该方法初步实现了卫星钟差完备性监测理念,为后续卫星钟差完备性监测研究打好了基础。更多还原

【Abstract】 It is necessary to monitor satellite clock error in real-time because the quality of satellite clock error has a great influence on the user positioning result.This process is defined as integrity monitoring of satellite clock error.Based on the idea of integrity monitoring,it uses the GPS pseudo-range observations of multiple base station to calculate the satellite clock error and then analyzes the residual error of same satellite on different base station to determine its availability.If the residual error of one of satellite has significant differences from the others and greater than the threshold,it has a poor quality. A warning should be given to users so as to complete the integrity monitoring of satellite clock error.Based on the above-mentioned theory,by using the data of different network to implement integrity monitoring of satellite clock error,the results are compared to verify the availability of the theory.The theory is a simple implementation of the idea and the base of subsequent study of integrity monitoring of satellite clock error.更多还原