机载MIMO STAP收发天线联合设计研究  

Joint Design of Transmitting and Receiving Antennas For Airborne MIMO STAP

作　　者：吴昊天[1] 王兴亮[1] 李伟[1] 兰星[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《测控技术》2015年第9期115-118,共4页Measurement & Control Technology

基　　金：国家自然科学基金项目(61302153);航空科学基金项目(20122096011);航天科技创新基金项目(CASC040203)

摘　　要：针对机载多输入多输出雷达进行动目标检测时,天线稀疏出现栅瓣导致盲速、天线密布导致冗余及布阵需考虑平台尺寸等问题,对天线结构进行研究。首先基于相位中心等效原理,讨论一定收发阵元数目下如何实现最大自由度和最大孔径;然后根据机载平台结构,设计更合理的收发天线布阵结构;最后结合多相编码进行空时自适应处理,实现动目标检测和杂波抑制。仿真实验表明,与其他天线结构相比,本文方法可获得更好的动目标检测性能。The antennd structure is studied for airborne MIMO STAP to solve these problems that sparse array brings grating lobes which lead to blind speeds, dense array brings redundancy, and array design relies on prac- tical size and structure platform. Using phase center equivalence principle, the method for achieving the maximum freedom and virtual aperture based on certain transmitting and receiving antennas number is discussed. MIMO array structure is proposed to provide more feasible, reasonable and effective properties. Combining different array structures together with poly-phase codes, clutter suppression and moving target indication are realized for airborne MIMO radar. Simulation experiments show that the proposed MIMO array structure achieves better moving target indication performance.

关 键 词：多输入多输出雷达 空时自适应处理 动目标检测 阵列设计 

分 类 号：TN794[电子电信—电路与系统]