| 一种双站纯方位快速渐进无偏定位算法研究 |
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| 引用本文： | 曲长文,徐征,苏峰.一种双站纯方位快速渐进无偏定位算法研究[J].现代雷达,2011,33(6):41-45. |
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| 作者姓名： | 曲长文 徐征 苏峰 |
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| 作者单位： | 海军航空工程学院电子信息工程系,山东烟台,264001 |
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| 摘 要： | 针对多站无源定位中扩展卡尔曼滤波算法等递推类算法受初始状态影响大,滤波不稳定及将非线性观测方程转化为伪线性方程会产生有偏估计的缺点,提出了一种新的双站纯方位快速渐进无偏定位算法。该算法将扩维伪测量方程的系数误差协方差矩阵引入约束条件,通过对未知状态变量含二次约束的伪线性方程进行约束最小二乘(CLS)极小化处理,最终只需要对一对矩阵束进行广义特征分解,即可获得目标状态估计值。仿真结果表明,该算法与EKF算法及最小二乘算法相比,定位性能更稳定,精度更高,在测量误差较大或者2个观测站测量误差不一致时优势更明显。
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| 关 键 词： | 无源定位 纯方位 渐进无偏 约束最小二乘 特征分解 |
A Study on Asymptotically Unibiased Location Algorithm with Bearings-only Measurements by Two Stations |
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| QU Chang-wen,XU Zheng,SU Feng.A Study on Asymptotically Unibiased Location Algorithm with Bearings-only Measurements by Two Stations[J].Modern Radar,2011,33(6):41-45. |
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| Authors: | QU Chang-wen XU Zheng SU Feng |
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| Affiliation: | QU Chang-wen,XU Zheng,SU Feng(Department of Electronic and Information Engineering,Naval Aeronautical and Astronautical University,Yantai 264001,China) |
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| Abstract: | The EKF algorithm is easy to be affected by the initial state value and the pseudo linear algorithm derived from measure equation will result in biased or divergent solution.A new asymptotically unbiased location algorithm with bearings-only measurements by two stations is proposed to solve these problems.The proposed algorithm introduces the correlation matrix of the coefficient error matrix into constraint condition.It uses constraint least squares minimization on the pseudo linear equation which includes... |
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| Keywords: | passive location bearing-only asymptotically unbiased constraint least squares eigen-decomposition |
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