北斗试验卫星空间信号精度参数SISA计算方法及性能验证

doi:10.11947/j.AGCS.2018.20180316

测绘学报 ›› 2018, Vol. 47 ›› Issue (S0): 1-8.doi: 10.11947/j.AGCS.2018.20180316

• • 下一篇

北斗试验卫星空间信号精度参数SISA计算方法及性能验证

陈金平¹, 曹月玲^2,3, 郭睿¹, 李晓杰¹, 孟鑫^2,4

1. 北京卫星导航中心, 北京 100094;
2. 中国科学院上海天文台, 上海 200030;
3. 上海天文台中国科学院行星科学重点实验室, 上海 200030;
4. 同济大学, 上海 200092

收稿日期:2018-03-09 修回日期:2018-07-10 出版日期:2018-12-31 发布日期:2019-05-18
作者简介:陈金平(1971-),男,博士,高级工程师,研究方向为GNSS系统完好性监测。E-mail:jinping_chen@sina.com
基金资助:
国家自然科学基金（41374038；41204022；41674041；11203059）

The Calculation Method and Performance Evaluation on SISA of New Generation BDS

CHEN Jinping¹, CAO Yueling^2,3, GUO Rui¹, LI Xiaojie¹, MENG Xin^2,4

1. Beijing Satellite Navigation Center,Beijing 100094, China;
2. Shanghai Astronomical Observation, Chinese Academy of Science, Shanghai 200030, China;
3. CAS Key Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;
4. Tongji University,Shanghai 200092,China

Received:2018-03-09 Revised:2018-07-10 Online:2018-12-31 Published:2019-05-18
Supported by:
The National Natural Science Foundation of China (Nos. 41374038;41204022;41674041;11203059)

摘要/Abstract

摘要： 完好性是衡量卫星导航系统可靠性的重要指标，提升完好性服务是北斗全球卫星导航系统建设的重要内容。本文提出了基于先验精度调节的空间信号精度SISA（signal in space accuracy）参数预报方差转换算法，并利用精密轨道重叠平面误差对平面空间信号完好性参数SISA_oe的误差包络性能进行了验证，利用轨道重叠径向误差、星地双向时频传递及SLR检核对径向空间信号完好性参数SISA_oc的误差包络性能进行了验证。基于北斗实测数据分析结果表明，按照本文提出的SISA参数计算方法，SISA_oe参数对轨道平面误差的包络性能约为99.6%，SISA_oc参数对轨道径向及钟差误差的包络性能约为98.5%，对外符合激光检核误差的包络性能约为99.5%。

关键词: 北斗卫星导航系统, 空间信号精度, 完好性, 卫星激光测距

Abstract: Integrity is an important indicator of the reliability of satellite navigation systems. Improving the integrity service is an important part of BDS global navigation system construction.This paper presents a SISA (signal in space accuracy) calculation algorithm with variance conversion prediction based on apriori precision adjustment, and the performance of the SISA for error envelopment is evaluated based on the real data of new generation BeiDou navigation system.SISA_oe is verified by the precision orbit overlap error in orbital plane, and the SISA_oc is verified by the orbital radial overlap error, SLR check error and clock error estimated by the two-way time-frequency transmission.The results show that the error envelope performance of the SISA_oe parameter for orbital plane error is 99.6%;the error envelope performance of the SISA_oc parameter for the track radial and clock error is 98.5%, and for the SLR check error is 99.5%.

Key words: BeiDou navigation system(BDS), signal in space accuracy(SISA), integrity, satellite laser ranging(SLR)

中图分类号:

P228

陈金平, 曹月玲, 郭睿, 李晓杰, 孟鑫. 北斗试验卫星空间信号精度参数SISA计算方法及性能验证[J]. 测绘学报, 2018, 47(S0): 1-8.

CHEN Jinping, CAO Yueling, GUO Rui, LI Xiaojie, MENG Xin. The Calculation Method and Performance Evaluation on SISA of New Generation BDS[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(S0): 1-8.

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北斗试验卫星空间信号精度参数SISA计算方法及性能验证

The Calculation Method and Performance Evaluation on SISA of New Generation BDS

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