卫星导航空间信号用户测距误差评估方法

doi:10.11959/j.issn.1000-0801.2016266

Abstract

Abstract:

Signal-in-space（SIS）accuracy is one of the basic performance of satellite navigation system, and the user range error（URE）of satellite is often used as the important indicator of SIS accuracy. Based on the orbit error and clock error, the SIS URE evaluation methods of GPS and BDS were discussed. And the SIS performance of GPS and BDS were evaluated by using the measured data. The results show that all the SIS URE of GPS satellites are better than 2.2 m. In addition, except GEO-01 and GEO-04, the SIS URE of other BeiDou satellites are better than 2.5 m. And it conforms the indicators of GPS standard positioning service performance standard （GPS SPS PS, 2008）and BDS open service performance standard（BDS OS PS, 1.0）.

Key words: signal-in-space, accuracy, user range error, GPS, BeiDou navigation satellite system

Ershen WANG,Qing ZHANG,Hong LEI,Tao PANG. Evaluation method of satellite navigation signal-in-space user range error[J]. Telecommunications Science, 2016, 32(10): 56-62.

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References 16

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系统	所属国家	URE指标	资料来源
GPS	美国	≤7.8m（单频C/A码，	GPS SPS PS（2008年）
		95%置信度）
BDS	中国	≤2.5 m（GEO/IGSO/MEO，	BDS OS PS（1.0版）
		95%置信度）

Evaluation method of satellite navigation signal-in-space user range error

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