北斗星基增强系统性能评估
以实际广播星历、精密星历和北斗星基增强系统(BDSBAS)增强报文为实验数据,通过计算BDSBAS轨道误差、卫星钟差、空间信号测距误差和BDSBAS格网电离层有效点、播发时间和电离层延迟误差6个指标,评估分析了BDSBAS空间信号的性能。结果显示:BDSBAS增强后的GPS卫星轨道误差在切向、法向、径向分别降低了34.57%,40.57%,30.90%;卫星钟差均方根降低了24.31%,卫星钟差标准差降低了16.8%;空间信号测距误差相比增强前降低了32.75%;BDSBAS格网电离层有效点覆盖了中国及周边地区;BDSBAS各点电离层延迟播发间隔均达到ICAO对精确差分定位的要求;电离层延迟在...
Main Authors: | 刘 瑞华, 耿 海潮, 刘 亮 |
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Format: | Article |
Language: | English |
Published: |
Science Press
2023-08-01
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Series: | Kongjian kexue xuebao |
Subjects: | |
Online Access: | https://www.sciengine.com/doi/10.11728/cjss2023.04.2022-0039 |
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