›› 2015, Vol. 28 ›› Issue (6): 24-.

• 论文 • 上一篇    下一篇

四星时差定位精度分析

任源博   

  1. (西安电子科技大学 电子信息攻防对抗与仿真重点实验室,陕西 西安 710071)
  • 出版日期:2015-06-15 发布日期:2015-06-20
  • 作者简介:任源博(1987—),男,硕士研究生。研究方向:时差定位。E-mail:345096741@qq.com

Precision Analysis of 4-Satellite Location Based on TDOA

REN Yuanbo   

  1. (Key Laboratory of Electronic Information Countermeasure and Simulation,Xidian University,Xi'an 710071,China)
  • Online:2015-06-15 Published:2015-06-20

摘要:

针对四星时差定位系统,在Y型、倒T型、方形和菱形分布的条件下对定位精度进行仿真,并分析了卫星高度、基线距离对定位精度的影响。仿真结果表明,四星时差定位在Y型分布时具有最佳的定位精度,且基线距离越大定位精度越高,适当的不规则分布有助于定位精度的提高。

关键词: 无源定位, 时差定位, 几何精度稀释因子

Abstract:

The GDOP (geometric dilution of precision),based on TDOA (the difference of arrival),of representative 4-Satellite of Y,inverted T,square and diamond are simulated.The influence of the satellite altitude and the length of baseline on the precision of location are analysed.The simulation results show that 4-Satellite location of Y distribution based on TDOA achieves the best precision.The increase in the length of baseline and appropriate irregular distribution contributes to improving the precision of location.

Key words: passive location;TDOA;GDOP

中图分类号: 

  • TN967.1