摘要
卫星导航空间信号精度是卫星导航系统的基本性能之一,为评估GPS和BDS卫星导航系统空间信号精度,研究了拉格朗日插值模型。采用插值精度和效率较高的十阶拉格朗日滑动插值法对IGS精密星历数据进行内插计算,使用本地接收机采集到的广播星历数据作为实测数据,并对GPS和BDS的空间信号精度进行了评估。结果表明,基于本地实测数据的GPS和北斗SIS URE满足GPS和北斗导航系统标准定位服务性能规范的指标要求,对应的URRE和URAE均优于对应接口文件中的指标。
The signal-in-space accuracy of Satellite navigation is one of the fundamental performances of satellite navigation systems.To evaluate the signal-in-space accuracy of GPS and BDS,the Lagrangian interpolation model is studied in this paper.The IGS precision ephemeris data is interpolated by using the tenth-order Lagrangian sliding interpolation method that has high interpolation precision and high efficiency.The broadcast ephemeris data collected by the local receiver of GPS and BDS is adopted to evaluate the accuracy and integrity of signal-in-space.The results show that the GPS and Beidou SIS URE based on the local measured data meets the requirements of the GPS and Beidou navigation system standard positioning service performance specifications,where the corresponding URRE and URAE are better than the corresponding indicators in the interface file,respectively.
作者
王尔申
赵珩
曲萍萍
庞涛
孙军
WANG Er-shen;ZHAO Heng;QU Ping-ping;PANG Tao;SUN Jun(School of Electronic and Information Engineering,ShenyangAerospace University,Shenyang 110136;Liaoning General Aviation Key Laboratory,ShenyangAerospace University,Shenyang 110136;People's Liberation Army 93398,Shenyang 024413,China)
出处
《沈阳航空航天大学学报》
2019年第4期43-48,共6页
Journal of Shenyang Aerospace University
基金
国家自然科学基金(项目编号:61571309)
辽宁“百千万人才工程”项目(项目编号:04021407)
辽宁省自然科学基金项目(项目编号:L2019251)
辽宁省教育厅项目(项目编号:L2014059,L201716,UPRP2018198)
辽宁省高等学校优秀人才支持计划(项目编号:LR2016069)
