基于WGS-84的双星时差/频差定位算法及误差分析

›› 2014, Vol. 27 ›› Issue (2): 53-.

基于WGS-84的双星时差/频差定位算法及误差分析

李瑞玲

(西安电子科技大学电子工程学院,陕西西安 710071)

出版日期:2014-02-15 发布日期:2014-01-12
作者简介:李瑞玲(1988—),女,硕士研究生。研究方向:信息对抗。E-mail:liruilingcn@163.com

WGS-84 Based on the Binary Difference/Frequency Difference Localization Algorithm and Error Analysis

LI Rui-Ling

(School of Electronic Engineering,Xidian Universitiy,Xi'an 710071,China)

Online:2014-02-15 Published:2014-01-12

摘要/Abstract

摘要：

研究了低轨道双星通过测量时差和频差对地面固定辐射源进行无源定位的问题。双星时差/频差定位算法是时差、频差单独定位公式和WGS-84地球椭球模型的结合,该算法通过迭代的方法提高了定位精度。文中结合定位误差算法和定位精度的GDOP算法,通过仿真、对比系统地分析了影响双星时差/频差定位系统定位精度的因素,分析结果对双星定位系统的应用具有借鉴意义。

关键词: 无源定位;时差/频差;WGS-84;定位精度

Abstract:

The low orbit dual-satellites passive location of the ground fixed emitter by measuring the TDOA and FDOA is discussed in this paper.The dual-satellites TDOA/FDOA location formula consists of the TDOA localization formula,FDOA localization formula and WGS-84 ellipsoid earth model.An iterative method is used to improve the precision of location.By the combination of the positioning error algorithm and GDOP method,the main factors influencing the precision of location are systemically analyzed by simulation and comparison.The results are of significance to the dual-satellites positioning system application.

Key words: passive location;TDOA/FDOA;WGS-84;the precision of location

中图分类号:

TN967

李瑞玲. 基于WGS-84的双星时差/频差定位算法及误差分析[J]. , 2014, 27(2): 53-.

LI Rui-Ling. WGS-84 Based on the Binary Difference/Frequency Difference Localization Algorithm and Error Analysis[J]. , 2014, 27(2): 53-.

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