摘要
卫星导航系统基本完好性监测对象是基本导航电文,其算法模型有两种:一是用户伪距精度(URA)和实时用户距离精度(RURA);二是空间信号精度(SISA)和空间信号监测精度/完好性标示(SISMA/IF)。通过对卫星导航系统基本完好性监测技术进行分析定义,研究了系统基本完好性的两种主流算法。分别在正常情况下、卫星钟差和轨道异常情况下以及传播过程中误差异常情况下,对这两种算法进行了仿真验证和效能分析。
The monitoring object of satellite navigation system basic integrity is basic navigation message.There are two algorithm： one is URA and RURA,another is SISA and SISMA/IF.The definition of satellite navigation system basic integrity monitoring technique was analyzed,and the two algorithms were researched that was simulated and compared on the condition of normal,off normal for satellite,off normal for transmit respectively.
出处
《测绘科学技术学报》
北大核心
2011年第6期407-410,415,共5页
Journal of Geomatics Science and Technology
