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首页> 外文期刊>IEEE communications letters >A Novel TSWLS Method for Moving Target Localization in Distributed MIMO Radar Systems
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A Novel TSWLS Method for Moving Target Localization in Distributed MIMO Radar Systems

机译：一种用于在分布式MIMO雷达系统中移动目标定位的新型TSWLS方法

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摘要

In this letter, the moving target localization problem is studied under distributed multiple-input multiple-output radar systems. Based on the two-stage weighted least squares framework, a closed-form solution of target position and velocity is derived. In the first stage, linear equations about target position and velocity are established with no nuisance parameters. Then the estimate is achieved by a weighted least squares (WLS) estimator. In the second stage, the estimation error of the first stage is estimated by another WLS method to refine the localization performance. The final estimate, combining solutions of the first stage and the second stage, is approximately unbiased and its covariance is equal to the Cramer-Rao lower bound under small noise conditions through the theoretical derivation and numerical simulations. Simulation results demonstrate the proposed method achieves better location accuracy than the state-of-the-art algorithms.
机译：在这封信中，在分布式多输入多输出雷达系统下研究了移动目标定位问题。基于两阶段加权最小二乘框架，推导出目标位置和速度的闭合溶液。在第一阶段，建立关于目标位置和速度的线性方程，没有滋扰参数。然后通过加权最小二乘（WLS）估计器实现估计。在第二阶段，通过另一个WLS方法估计第一阶段的估计误差来细化本地化性能。第一阶段和第二阶段的最终估计，组合解决方案大致无偏见，并且其协方差通过理论推导和数值模拟等于小噪声条件下的克拉梅-RAO下限。仿真结果证明了所提出的方法比现有技术算法实现更好的位置精度。

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