正交波形MIMO雷达对发射杂散影响的改善  

MIMO radars with orthogonal waveforms:an effective way of reducing transmitted strays

作　　者：胡蜀徽[1] 李军[1] 王擘[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《雷达与对抗》2010年第3期30-33,50,共5页Radar & ECM

摘　　要：雷达在波形产生和传输过程中会产生杂散信号,这些杂散信号可能干扰雷达检测,产生EMI等。由于正交波形MIMO雷达各个发射通道的发射信号波形是正交的,而某些发射杂散对阵列是不相干的,因此不会产生阵列处理增益,从而就减小了对雷达本身及其他RF系统的干扰。本文分析了雷达发射杂散的信号模型,讨论了发射杂散对正交波形MIMO雷达和传统相控阵雷达的目标检测性能的影响,说明了MIMO雷达在减小杂散影响方面的性能优势。Stray signals may be generated when waveforms are generated and waves are transmitted,and may interfere with radar detection and bring EMI.MIMO radars with orthogonal waveforms send,through its transmitting channels,signals that are mutually orthogonal,strays of which being incoherent with the arrays so as not to produce the gain of array processing and hence reduce the interference with radars and other RF systems.With the model of the transmitted strays analyzed,the effects of the strays on the target detection performances of the MIMO radars with orthogonal waveforms and the conventional phased array radars are discussed,and evidences show that MIMO radars are superior in reducing the effects of the strays.

关 键 词：MIMO雷达 正交波形 发射杂散 干扰 检测 

分 类 号：TN95[电子电信—信号与信息处理]