摘要
为研究分布式多输入多输出(MIMO)雷达天线收发共用导致的信道互易性对检测性能的影响,首先利用分布式MIMO相控阵雷达观测目标时的信号模型分析了天线收发共用导致的信道互易性;然后,在考虑信道互易性条件下依据相关信道间的目标回波相参积累、独立信道间目标回波非相参积累的方法推导了分布式MIMO雷达的似然比检测器;最后,仿真分析了有信道互易性和无信道互易性两种情况下分布式MIMO雷达的检测概率曲线。仿真结果表明:在一定条件下,信道互易性可有效提高分布式MIMO雷达的检测性能。
The effect of channel reciprocity,which is caused by the transceiver sharing antenna of distributed multiple input multiple output（MIMO）radar,on detection performance is studied.Firstly,the channel reciprocity is analyzed according to the distributed MIMO-phased radar signal model.Secondly,with the consideration of channel reciprocity,the likelihood ratio test detector is derived according to the rules that echoes from the coherent channels are processed coherently and echoes from incoherent channels are processed incoherently.Finally,the simulation and analysis of detection probability curves with channel dissimilarity and no channel dissimilarity are made.Simulation results show that channel reciprocity can effectively improve the detection performance of distributed MIMO radar under certain conditions.
出处
《海军工程大学学报》
CAS
北大核心
2017年第6期44-48,71,共6页
Journal of Naval University of Engineering
基金
国家自然科学基金资助项目(61179015
61501505)
