西安电子科技大学学报（自然科学版）2016，Vol.43Issue(2)：132-138,7.DOI:10.3969/j.issn.1001-2400.2016.02.023
一种低旁瓣方向图修正的MIMO雷达波形设计方法
MIMO radar waveform design method via low sidelobe beampattern modification
摘要
Abstract
In the design of the multiple-input multiple-output (MIMO) radar waveform, decreasing transmit beampattern sidelobes could reduce the energy of clutters and false targets from sidelobes and increase the received signal to noise ratio (SNR) so as to improve the angle estimation property. Motivated by this idea, a transmit waveform design method based on low sidelobe beampattern modification is proposed for MIMO radar. First, the transmit waveform cross-correlation matrix can be obtained by the semidefinite relaxation (SDR) technique. Then the essence of our method is to establish an optimization modification model to reduce the beampattern sidelobe by changing the non-diagonal elements of the waveform cross-correlation matrix. Finally, the corresponding transmit beamforming weight matrix is obtained by this modified matrix, and the ESPRIT algorithm is used for the direction of arrival (DOA) estimation. Meanwhile, the feasibility of our method is demonstrated. Simulation results show the superiorities of our method in sidelobe suppression, DOA estimation accuracy and angle resolution.关键词
多输入多输出雷达/到达角估计/波形设计/低旁瓣/发射方向图Key words
multiple-input multiple-output radar/direction of arrival estimation/waveform design/low sidelobe/transmit beampattern分类
信息技术与安全科学引用本文复制引用
李奕蓉,胡捍英..一种低旁瓣方向图修正的MIMO雷达波形设计方法[J].西安电子科技大学学报（自然科学版）,2016,43(2):132-138,7.基金项目
国家科技重大专项资助项目(2011ZX03003-003-02) （2011ZX03003-003-02）
