中国空间科学技术

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双星定位系统改进方案与仿真研究

赵丽,刘建业,林雪原,熊智   

  1. 南京航空航天大学自动化学院导航研究中心,南京航空航天大学自动化学院导航研究中心,南京航空航天大学自动化学院导航研究中心,南京航空航天大学自动化学院导航研究中心 南京210016 ,南京210016 ,南京210016 ,南京210016
  • 发布日期:2004-08-25

Improved Scheme and Simulation ofDouble-star Positioning System

Zhao Li Liu Jianye Lin Xueyuan Xiong Zhi(Nanjing University of Aeronautics & Astronautics, Nanjing 210016)   

  • Online:2004-08-25

被引次数

35

摘要： 文章在考虑将系统改进到被动无源的单向测距模式时 ,提出在现有双星系统基础上增加伪卫星伪距观测量的两种改进方案 ,并对两种方案中的伪卫星进行最佳配置 ;通过两种双星系统的改进方案与原系统的对比分析 ,证明双星定位系统中增加伪卫星的方法可以改善系统的性能和定位精度。

关键词: 卫星测距, 伪卫星, 定点精度, 全球定位系统

Abstract: Double-star positioning system has its disadvantages because the mode of the system is active two-way ranging, such as user's position is easily exposed to enemies, the time delay, and so on. So passive ranging mode is considered to improve the double-star positioning system. Two improved schemes with adding pseudo-satellite based on the actuality to get more observed quantities are presented in this paper and optimum layout of the pseudo-satellites is also pointed out. When the position of pseudo-satellites is in optimum condition, it can be proved that the way that adding pseudo-satellites in the double-star positioning system can really improve the precision of position by comparison and analysis.