摘要
电离层闪烁是影响卫星导航系统定位性能的重要因素之一,中国南方区域是全球电离层闪烁多发区之一,开展电离层闪烁对卫星导航系统性能的影响研究具有重要意义。利用中国区域的电离层闪烁数据和GPS测量数据,对电离层闪烁情况下的用户定位性能进行了比较分析,发现电离层闪烁将引起用户定位误差的普遍增大,严重时可能出现定位异常,电离层闪烁对不同的定位应用方式具有不同程度的影响,电离层闪烁对卫星导航系统的多种影响是卫星导航系统的重要威胁之一。
There is great significance to carry out studies on ionospheric scintillation effects on GNSS, as they are one of the main threats to GNSS performance and their frequent occurring in south areas of China. With the scintillation data and GPS measurements from China, we make the analysis of scintillation effects on the performance of GNSS positioning. It is found that positioning accuracy will be degraded under scintillation conditions, and even anomaly positioning results appeared under severe scin- tillation. The degrees of degradation are depended on different positioning application. The complication of scintillation effects on GNSS makes it one of the main threats to GNSS.
出处
《全球定位系统》
2009年第6期1-8,共8页
Gnss World of China
