计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (9): 242-244.

• 工程与应用 • 上一篇    下一篇

GEO和IGSO卫星增强GPS性能的仿真分析

吴 军,常 江,姜 勇   

  1. 解放军理工大学 通信工程学院,南京 210007
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-03-21 发布日期:2012-04-11

Simulations and analysis of performance for GPS enhanced by GEO and IGSO

WU Jun, CHANG Jiang, JIANG Yong   

  1. School of Communications Engineering, PLA University of Science & Technology, Nanjing 210007, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-03-21 Published:2012-04-11

摘要: 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。

关键词: 全球定位系统, 地球同步轨道, 倾斜地球同步轨道, 位置精度因子, 可用性

Abstract: 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.

Key words: Global Positioning System(GPS), Geostationary Earth Orbit(GEO), Inclining Geostationary Synchronized Orbit(IGSO), Position Dilution Of Precision(PDOP), availability