单脉冲测角技术在MIMO雷达不同布阵下的性能分析  

Performance Analysis of Monopulse Angle Measurement Technology in Different MIMO Radar Arrays

作　　者：周琦[1] 陈伯孝[1] 晁淑媛[1] 

机构地区：[1]西安电子科技大学,西安710071

出　　处：《火控雷达技术》2010年第3期1-6,共6页Fire Control Radar Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-06-0856);国家部委基金资助课题(51307050102)

摘　　要：本文研究了多输入多输出(MIMO)雷达系统波束形成和单脉冲测角问题。MIMO雷达利用分集技术,在发射端全向发射正交波形,在接收端利用DBF技术同时形成多个波束。本文推导不同接收方式下MIMO雷达波束的方向图函数,给出其半功率波束宽度计算公式。将数字单脉冲测角技术应用于MIMO雷达,通过不同布阵对测角精度进行分析,并与相控阵雷达测角性能进行比较。计算机仿真结果表明,在相同阵列情况下,MIMO雷达测角性能优于传统相控阵雷达。Beamforming and monopulse angle measurement for multiple input multiple output （MIMO） radar system is discussed. Through application of space diversity technology in MIMO radar, orthogonal waveforms are transmitted omnidirectionally; and by using digital beam forming （DBF） technology in the receiver, multi-beam are formed simultaneously. Pattern function of MIMO radar beam in different receive ways is deduced; and the computing formulas of 3-dB beam-width are presented. Through application of digital monopulse angle measurement technology in MIMO radar, angle measurement precision in different arrays is analyzed and performance comparison with phased-array radar is conducted. Simulation results show that angle measurement performance of the MIMO radar is better than that of the conventional phased array radar with the same array.

关 键 词：多输入多输出(MIMO)雷达 DBF 单脉冲 测角精度 

分 类 号：TN958.5[电子电信—信号与信息处理]