J4 ›› 2015, Vol. 42 ›› Issue (3): 22-25+32.doi: 10.3969/j.issn.1001-2400.2015.03.004

• 研究论文 • 上一篇    下一篇

一种线性校正TOA定位算法

朱国辉1;冯大政1;周延1;聂卫科2   

  1. (1. 西安电子科技大学 雷达信号处理国家重点实验室,陕西 西安  710071;
    2. 西北大学 信息科学与技术学院,陕西 西安  710127)
  • 收稿日期:2014-02-10 出版日期:2015-06-20 发布日期:2015-07-27
  • 通讯作者: 朱国辉
  • 作者简介:朱国辉(1987- ),男,西安电子科技大学博士研究生,E-mail:zhugh@stu.xidian.edu.cn.
  • 基金资助:

    国家自然科学基金资助项目(61271293,61373177)

TOA localization algorithm using the linear-correction technique

ZHU Guohui1;FENG Dazheng1;ZHOU Yan1;NIE Weike2   

  1. (1. National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China;
    2. School of Information Science and Technology, Northwest Univ., Xi'an  710127, China)
  • Received:2014-02-10 Online:2015-06-20 Published:2015-07-27
  • Contact: ZHU Guohui

摘要:

针对到达时间定位中出现的非线性估计问题,提出了一种基于线性校正的定位算法.该算法首先将非线性到达时间定位方程转化为一组关于目标位置的伪线性方程,利用加权最小二乘估计进行初始求解; 在此基础上把伪线性方程组转化为关于估计偏差的求解问题,进而对初始解进行线性校正; 同时分析了所提算法的有效性.仿真结果表明,该算法具有较好的定位性能.

关键词: 定位, 到达时间, 加权最小二乘估计, 线性校正

Abstract:

A new time of arrival (TOA) location algorithm based on the linear correction technique is proposed to address the non-linear problem of TOA positioning. The proposed algorithm firstly rearranges the TOA measurement equations into pseudo-linear ones and we obtain the initial target position estimation using the weighted least-squares estimator. Then a linear correction technique is used to correct the initial estimation. The effectiveness of the proposed method is analyzed. Simulation study validates the good performance of the proposed algorithm.

Key words: location, time of arrival, weighted least squares estimates, linear-correction