电光与控制, 2018, 25 (6): 78, 网络出版: 2021-01-20
GNSS空间信号精度评估方法
On Methods for Evaluation of GNSS Signal-in-Space Accuracy
北斗卫星导航系统 空间信号 精度 性能评估 GNSS GNSS, BeiDou Navigation Satellite System(BDS) signal in space accuracy performance evaluation
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。
Abstract
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.
王尔申, 王世明, 雷虹, 庞涛, 曲萍萍, 张晴. GNSS空间信号精度评估方法[J]. 电光与控制, 2018, 25(6): 78. WANG Ershen, WANG Shiming, LEI Hong, PANG Tao, QU Pingping, ZHANG Qing. On Methods for Evaluation of GNSS Signal-in-Space Accuracy[J]. Electronics Optics & Control, 2018, 25(6): 78.
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