系统工程与电子技术 ›› 2009, Vol. 31 ›› Issue (12): 2797-2800.doi: 10.3969/j.issn.1001-506X.2009.12.01

• 电子技术 •    下一篇

多星TDOA和FDOA联合定位精度分析

朱伟强1，黄培康2，束锋3，马琴1   

  1. 1． 南京电子设备研究所， 江苏 南京 210007；2． 中国航天科工防御技术研究院科技委， 北京 100854；3． 南京理工大学电光学院通信工程系， 江苏 南京 210094
  • 出版日期:2009-12-24 发布日期:2010-01-03

Analysis of precision of multi-satellite joint location based on TDOA/FDOA

ZHU Wei-qiang1， HUANG Pei-kang2， SHU Feng3， MA Qin1   

  1. 1. Nanjing Electronic Equipment Inst., Nanjing 210007, China; 2. Science Technology Community, Defense Technology Academy, China Aerospace Science and Industry Corporation, Beijing 100854, China; 3. Dept. of Communication Engineering, Coll. of Electronic and Optical Technology,
    Nanjing Univ. of Science and Technology, Nanjing 210094, China
  • Online:2009-12-24 Published:2010-01-03

PDF (PC)

摘要：

推导了多星时差频差联合定位体制的定位误差下界(CramérRao lower bound, CRLB)，并给出CRLB能达到的最小值及其充要条件，该充要条件可用于设计卫星构型。与采用GDOP(geometric dilution of precision)衡量联合定位性能方法相比，CRLB更能精确地反映多星时差频差联合定位的性能。理论分析及仿真实验证明了联合定位比单独利用时差或频差定位可以取得更高的定位精度。

关键词: 时差, 频差, 定位, 克拉美罗下界

Abstract:

CramérRao lower bound (CRLB) is derived for multisatellite passive location based on time difference of arrival (TDOA) and frequency difference of arrival (FDOA) and its necessary and sufficient conditions are given. These conditions can be used to design an optimal shape of satellite array. Compared with geometric dilution of precision (GDOP), CRLB can better evaluate the performance of joint passive location. Both theory analysis and simulation prove the fact that the joint TDOA/FDOA location performs better than any one of  TDOA and FDOA.

Key words: time difference of arrival, frequency difference of arrival, location, CramérRao lower bound

京ICP备11035014号-5
版权所有 © 2019 北京航天情报与信息研究所《系统工程与电子技术》编辑部
通讯地址：北京市142信箱32分箱《系统工程与电子技术》编辑部(100854)
电　话：(010)68388406/68386014    E-mail：xtgcydzjs@126.com(系统工程与电子技术)/jseeoffice@126.com(JSEE)
本系统由北京玛格泰克科技发展有限公司设计开发