四川大学学报（自然科学版）2017，Vol.54Issue(2)：309-316,8.DOI:103969/j.issn.0490-6756.2017.03.015
MIMO雷达非均匀子阵划分方法研究
MIMO radar array design based on unequal subarrays
摘要
Abstract
The idea of dividing the transmitting array of MIMO radar into unequal subarrays was proposed in the paper.This kind of MIMO radar obtains the coherent processing gain and the waveform diversity gain which the MIMO radar with equal subarrays (called it phased-MIMO radar) enjoys.Furthermore,different sizes of subarrays form multiple beams;the greater apertures of subarrays provide more degree of freedom at the transmitting side.Theoretical analysis shows that compared with the phased-MIMO radar,the MIMO radar with unequal subarrays enjoys higher output signal-to-interference-plus-noise ratio (SINR) at low interference-to-noise ratios (INRs) by nonadaptive beamforming.Simulation results validate the correctness of the above theoretical analysis,and shows that the proposed MIMO radar with unequal subarrays can achieve lower sidelobe levels,deeper null steering,and higher output SINR by minimum variance distortionless response (MVDR),which is contributed to the its ability to reject interference combined with its robustness against sensor noise.关键词
多输入多输出(MIMO)雷达/非均匀子阵/相干处理增益/波形分集增益/副瓣电平Key words
MIMO radar/Unequal subarrays/Coherent processing gain/Waveform diversity gain/Side-lobe level分类
信息技术与安全科学引用本文复制引用
顾帅楠,李玉翔,赵峰,郑娜娥..MIMO雷达非均匀子阵划分方法研究[J].四川大学学报（自然科学版）,2017,54(2):309-316,8.基金项目
国家863计划项目(2012AA01A502,2012AA01A505) （2012AA01A502,2012AA01A505）
