Underwater sonar target imaging via compressed sensing with M sequences  

作　　者：Huichen YAN Jia XU Xiang-Gen XIA Xudong ZHANG Teng LONG 

机构地区：[1]Department of Electronic Engineering, Tsinghua University [2]School of Information and Electronics, Beijing Institute of Technology [3]Department of Electrical and Computer Engineering, University of Delaware

出　　处：《Science China Earth Sciences》2016年第12期111-120,共10页中国科学（地球科学英文版）

基　　金：supported in part by National Natural Science Foundation of China (Grant No. 61271391);111 Project of China Ministry of Education (MOE) (Grant No. B14010);New Century Excellent Talents Supporting Plan of China MOE (Grant No. NCET-13-0049);Ministry Research Foundation (Grant No. 9140A21050114HT05338);Outstanding Youth Teacher Training Plan of BIT (Grant No. BIT-JC-201205)

摘　　要：Due to the low sound propagation speed, the tradeoff between high azimuth resolution and wide imaging swath has severely limited the application of sonar underwater target imaging. However, based on compressed sensing(CS) technique, it is feasible to image targets with merely one pulse and thus avoid the above tradeoff. To investigate the possible waveforms for CS-based underwater imaging, the deterministic M sequences widely used in sonar applications are introduced in this paper. By analyzing the compressive matrix constructed from M sequences, the coherence parameter and the restricted isometry property(RIP) of the matrix are derived. Also, the feasibility and advances of M sequence are demonstrated by being compared with the existing Alltop sequence in underwater CS imaging framework. Finally, the results of numerical simulations and a real experiment are provided to reveal the effectiveness of the proposed signal.Due to the low sound propagation speed, the tradeoff between high azimuth resolution and wide imaging swath has severely limited the application of sonar underwater target imaging. However, based on compressed sensing（CS） technique, it is feasible to image targets with merely one pulse and thus avoid the above tradeoff. To investigate the possible waveforms for CS-based underwater imaging, the deterministic M sequences widely used in sonar applications are introduced in this paper. By analyzing the compressive matrix constructed from M sequences, the coherence parameter and the restricted isometry property（RIP） of the matrix are derived. Also, the feasibility and advances of M sequence are demonstrated by being compared with the existing Alltop sequence in underwater CS imaging framework. Finally, the results of numerical simulations and a real experiment are provided to reveal the effectiveness of the proposed signal.

关 键 词：SONAR high-resolution imaging compressed sensing M sequence coherence parameter restricted isometry property 

分 类 号：TN958[电子电信—信号与信息处理] U666.7[电子电信—信息与通信工程]