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GEO和IGSO卫星增强GPS性能的仿真分析
引用本文:吴军,常江,姜勇.GEO和IGSO卫星增强GPS性能的仿真分析[J].计算机工程与应用,2012,48(9):242-244,248.
作者姓名:吴军  常江  姜勇
作者单位:解放军理工大学通信工程学院,南京,210007
基金项目:国家自然科学基金(No.60972061,60972062);江苏省自然科学基金(No.BK2009060);江苏省“333”高层次人才培养资助项目.
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

Simulations and analysis of performance for GPS enhanced by GEO and IGSO
WU Jun , CHANG Jiang , JIANG Yong.Simulations and analysis of performance for GPS enhanced by GEO and IGSO[J].Computer Engineering and Applications,2012,48(9):242-244,248.
Authors:WU Jun  CHANG Jiang  JIANG Yong
Affiliation:School of Communications Engineering, PLA University of Science & Technology, Nanjing 210007, China
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.
Keywords:Global Positioning System (GPS)  Geostationary Earth Orbit (GEO)  Inclining Geostationary Synchronized Orbit (IGSO)  Position Dilution Of Precision (PDOP)  availability
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