子阵级密集MIMO阵列性能分析及试验验证  

Performance Analysis and Experimental Verification for Co-located MIMO Radar at Subarray Level

作　　者：孙斌 张二伟 王久友 黄璐[1] 华煜明 SUN Bin;ZHANG Erwei;WANG Jiuyou;HUANG Lu;HUA Yuming(Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China;Nanjing Research Institute of Electronics Technology,Nanjing 210039)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]南京电子技术研究所,南南京210039

出　　处：《现代雷达》2022年第12期112-117,共6页Modern Radar

摘　　要：相比单元级密集多输入多输出(MIMO)阵列的处理复杂度,子阵级密集MIMO阵列更具工程应用前景。针对已有文献分析均基于单元级密集MIMO阵列的不足,文中首先理论推导出了子阵级密集MIMO阵列的归一化方向图函数,然后阐述了其与单元级密集MIMO阵列在虚拟孔径形成上的本质差异,并分别与单元级密集MIMO阵列和相控阵(PA)进行了信噪比、测角精度和角分辨率等性能的对比分析,最后搭建试验平台验证了理论分析的正确性。Compared with the processing complexity of unit level co-located multiple input multiple output(MIMO) array, subarray level co-located MIMO array have more promising engineering applications. In view of the shortcomings of existing literature analysis based on cell level co-located MIMO array, the normalized antenna pattern function of co-located MIMO radar at subarray level is derived theoretically. Then, the essential differences in virtual aperture formation between subarray level co-located MIMO array and unit level co-located MIMO array is researched. The performance such as signal-to-noise ratio, angle measurement accuracy and angular resolution is compared between subarray level co-located MIMO array, cell level co-located MIMO array and phased array(PA) too. Finally, an experimental platform was built to verify the correctness of the theoretical analysis.

关 键 词：密集多输入多输出阵列 单元级 子阵级 测角精度 角分辨率 虚拟孔径 

分 类 号：TN957[电子电信—信号与信息处理]