【摘要】 研究了各观测通道中杂波功率水平不均匀条件下的统计MIMO雷达多脉冲相参检测问题。首先利用两步GLRT设计方法推导了杂波功率水平不均匀条件下的统计MIMO雷达广义CFAR检测器,然后基于统计MIMO雷达与传统多基地雷达在系统结构上的相似性,将信息融合的思想引入到检验统计量的设计中,讨论了部分观测通道失效条件下检测器的设计问题。性能分析表明,随着白化后的失效通道数量的增加,基于对各观测通道子统计量取最大值的信息融合方式在检测性能上将逐渐超越基于非相参积累的信息融合方式。更多还原

【Abstract】 The multi-pulse coherent detection problem for statistical MIMO radar is investigated in the condition that the background power level of each observation channel is different from others.Firstly,the Two-Step GLRT design procedure is used to derive the generalized CFAR detectors of MIMO radar in this condition.Secondly,based on the comparability between the system structures of statistical MIMO radar and troditional multi-static radar,the idea of information fusion is introduced into the detector design process,and used to design the detector suited to the case when partial observation channels are malfunctioning.The performance analysis shows that,with respect to the detection performance,the information fusion mode of taking the maximum sub-statistic will become superior to that of non-coherently accumulating all sub-statistics,as the number of whitened malfunctioning observation channels increases gradually.更多还原