【摘 要】
：
与GPS不同，北斗系统的空间星座由GEO、IGSO和MEO三类不同卫星混搭组成，故研究不同北斗卫星组合特别是GEO卫星对北斗定位精度的影响就显得尤为必要和重要。本文通过分析不同
【机 构】
：
上海北伽导航科技有限公司,上海,中国,201702
论文部分内容阅读
与GPS不同，北斗系统的空间星座由GEO、IGSO和MEO三类不同卫星混搭组成，故研究不同北斗卫星组合特别是GEO卫星对北斗定位精度的影响就显得尤为必要和重要。本文通过分析不同GEO卫星组合定位的PDOP值，并考虑观测点的不同纬度、GEO卫星围绕赤道的摆动、二维定位、具有相同观测方向的卫星等多种因素，得到增加包括GEO在内的定位卫星数目总能降低PDOP值等重要结论。
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