为了增强GPS在亚太地区的导航性能,提出了一种利用GEO和IGSO卫星增强GPS星座的方法。通过仿真分析,研究了该地区在星座增强前后的卫星可见性,PDOP值等方面的变化规律,通过对比导航系统在全球范围内的性能表现,证明这种增强系统在定位精度和可用性方面均有较大提高。
A method for enhancing the performance of GPS in Asia & Pacific is presented. It adds the GEO(Geostationary Earth Orbit) & IGSO (Inclining Geostationary Synchronized Orbit) satellites to the GPS constellation, and then analyzes the visibility and PDOP in the enhanced area. Compared with the same parameters on a global scale, it is concluded that the positioning accuracy and availability of GPS are increased owing to the enhanced GEO & IGSO satellites.