摘要
空间信号(SIS)精度是卫星导航系统的性能之一。针对目前精度评估模型存在的问题,提出了分段式SIS用户测距误差(URE)评估模型,并研究了SIS用户测速误差(URRE)、用户测加速度误差(URAE)评估模型,利用广播星历和精密星历评估了GPS和BDS的SIS精度性能。结果表明,除BDS C02卫星的URE以及GPS PRN10卫星的URAE略大以外,其余GPS和BDS卫星的SIS URE,URRE和URAE均符合各自系统的指标,验证了所提精度评估方法的有效性。
Signal-in-Space( SIS) accuracy is one of the basic performances of satellite navigation system.Considering the disadvantages of existing accuracy calculation models,we proposed a segmented SIS User Range Error( URE) evaluation model,carried out a study on the models for evaluation of SIS User Range Rate Error( URRE) and the User Range Acceleration Error( URAE),and used the broadcast ephemeris and precise ephemeris to evaluate the SIS accuracy of GPS and BDS. The results show that: the URE of BDS C02 and the URAE of GPS PRN10 are relatively larger,while the SIS URE,URRE and URAE of the other GPS and BDS satellites all conform to their own indicators. It verified the effectiveness of the proposed accuracy evaluation method.
作者
王尔申
王世明
雷虹
庞涛
曲萍萍
张晴
WANG Er-shen;WANG Shi-ming;LEI Hong;PANG Tao;QU Ping-ping;ZHANG Qing(Shenyang Aerospace University, a. School of Electronic and Information Engineering;b. Liaoning General Aviation Key Laboratory, Shenyang 110136, Chin;2. Electromagnetic Environment Effect Top Laboratory of Aviation Industry, Shenyang Aircraft Design & Research Institute, Shenyang 110035, China)
出处
《电光与控制》
北大核心
2018年第6期78-82,共5页
Electronics Optics & Control
基金
国家自然科学基金(61571309
61101161)
辽宁省"百千万人才工程"项目
辽宁省高等学校优秀人才支持计划(LR2016069)
辽宁省教育厅项目(L201716)
中央高校基本科研业务费专项资金(3132016317)
关键词
GNSS
北斗卫星导航系统
空间信号
精度
性能评估
GNSS
BeiDou Navigation Satellite System (BDS)
signal in space
accuracy
performance evaluation