一种基于信道估计的MIMO雷达空时信号设计方法

赵瑞丽; 刘峥

doi:10.3724/SP.J.1146.2008.01289

一种基于信道估计的MIMO雷达空时信号设计方法

doi: 10.3724/SP.J.1146.2008.01289

赵瑞丽,
刘峥

基金项目:

国家部委基金资助课题

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出版历程
- 收稿日期: 2008-10-10
- 修回日期: 2009-03-16
- 刊出日期: 2009-09-19

A Method of Spatio-Temporal Signal Design for MIMO Radar Based on Channel Estimation

摘要

摘要: 多输入多输出雷达的新颖之处在于它利用空间分集和波形分集来改善雷达的性能。合理的波形设计可以更好地实现空间分集，该文在杂波统计特性已知的条件下，提出了一种基于信道参数估计的MIMO雷达空时信号设计方法。该方法在推导出信道参数的线性贝叶斯估计之后，通过最小化贝叶斯估计均方误差的方法来优化发射信号。该方法设计的优化信号为杂波协方差矩阵的函数，论文从信息论的角度验证了该结论的正确性。仿真结果表明MIMO雷达发射该方法设计的信号可改善目标的检测性能。
- MIMO雷达; 目标检测; 空时信号设计; 线性贝叶斯估计; 最小均方误差
Abstract: The novelty of MIMO radar is to improve the performance of radar utilizing spatial diversity and waveform diversity. To achieve full diversity, this paper considers the problem of spatio-temporal signal design for MIMO radar based on channel estimation with the clutter statistical properties known. The method obtains the optimized spatio-temporal signal though minimizing the mean-square error of the channels linear Bayes estimation. It shows that the optimized spatio-temporal signal is a function of the clutter covariance matrix, which is verified from information theoretical point of view. Finally the simulation results show that the optimized spatio-temporal signal improves the target detection performance.

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