| 一种线性校正TOA定位算法 |
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| 引用本文： | 朱国辉,冯大政,周延,聂卫科.一种线性校正TOA定位算法[J].西安电子科技大学学报,2015,42(3):22-25,32. |
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| 作者姓名： | 朱国辉 冯大政 周延 聂卫科 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室;西北大学信息科学与技术学院 |
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| 基金项目： | 国家自然科学基金资助项目(61271293,61373177) |
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| 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.
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| 关 键 词： | 定位 到达时间 加权最小二乘估计 线性校正 |
| 收稿时间： | 2014-02-10 |
TOA localization algorithm using the linear-correction technique |
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| ZHU Guohui;FENG Dazheng;ZHOU Yan;NIE Weike.TOA localization algorithm using the linear-correction technique[J].Journal of Xidian University,2015,42(3):22-25,32. |
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| Authors: | ZHU Guohui;FENG Dazheng;ZHOU Yan;NIE Weike |
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| Affiliation: | (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) |
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| 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. |
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| Keywords: | location time of arrival weighted least squares estimates linear-correction |
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