Orthogonal Waveforms Design and Performance Analysis for MIMO Sonar

摘要：

In this paper, a Multiple-Input Multiple-Output (MIMO) sonar system which can deal with multiple targets is discussed, where orthogonal waveforms are transmitted simultaneously. According to the requirement of waveform orthogonality, the orthogonal frequency division pseudo-random signal (OFD-PR), orthogonal frequency division determinant signal (OFD-LFM) and the spread-spectrum code-based signal (Gold-BPSK) are designed. The Maximum Likelihood (ML) DOA estimator and CRB for MIMO sonar is described. The performance of MIMO sonar based on different waveforms is analyzed via experiments in an anechoic water tank. Simulation and experimental results show that the waveforms which we design possess the higher resolution for multiple source DOA estimation than its phased-array and they could resolve the two targets with a separation of 1/2 beam width at low SNR. The analysis of DOA estimates and experimental results show that the OFD-PR signal has much better performance than others.

关键词： Multiple-Input Multiple-Output (MIMO) sonar Orthogonal waveforms Maximum Likelihood (ML) DOA estimator CRB Experimental results Phased-array Design

作者: SHI Wentao Huang Jianguo CUI Xiaodong HOU Yunshan

作者单位: College of Marine, Northwestern Polytechnical University, Xian, China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 2382-2385

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）