TY - GEN
T1 - Orthogonal waveforms design and performance analysis for MIMO sonar
AU - Shi, Wentao
AU - Jianguo, Huang
AU - Cui, Xiaodong
AU - Hou, Yunshan
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - CRB
KW - Design
KW - Experimental results
KW - Maximum likelihood (ML) DOA estimator
KW - Multiple-input multiple-output (MIMO) sonar
KW - Orthogonal waveforms
KW - Phased-array
UR - http://www.scopus.com/inward/record.url?scp=78651065667&partnerID=8YFLogxK
U2 - 10.1109/ICOSP.2010.5656922
DO - 10.1109/ICOSP.2010.5656922
M3 - 会议稿件
AN - SCOPUS:78651065667
SN - 9781424458981
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 2382
EP - 2385
BT - ICSP2010 - 2010 IEEE 10th International Conference on Signal Processing, Proceedings
T2 - 2010 IEEE 10th International Conference on Signal Processing, ICSP2010
Y2 - 24 October 2010 through 28 October 2010
ER -