Robust adaptive matched field processing with environmental uncertainty  

作　　者：YANG Kunde MA Yuanliang ZHANG Zhongbing ZOU Shixin 

机构地区：[1]Institute of Acoustic Engineering, Northwestern Polytechnical University Xi'an 710072

出　　处：《Chinese Journal of Acoustics》2006年第2期159-170,共12页声学学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China (10304015,60472073) the Foundation from State Key Laboratory of Acoustics

摘　　要：The main challenges on detection and localization of quiet targets in littoral regions for passive sonar are the complicated acoustic propagation and the prevalence of loud ship interferences on the surface. Adaptive matched field processing can provide the ability to null surface interferences, but the mismatch between the computed and actual array steering vectors due to environment uncertainty, and the motion of both targets and interferences can result in loss of array gain significantly. To address the problem of environmental mismatch and target motion, a robust motion compensation algorithm and a system scheme for adaptive matched field processing have been developed. Both Numerical simulation and analysis of experimental data demonstrates that the robust AMFP scheme could suppress surface loud interferences and improve the detection performance for underwater weak moving targets in complex shallow water.The main challenges on detection and localization of quiet targets in littoral regions for passive sonar are the complicated acoustic propagation and the prevalence of loud ship interferences on the surface. Adaptive matched field processing can provide the ability to null surface interferences, but the mismatch between the computed and actual array steering vectors due to environment uncertainty, and the motion of both targets and interferences can result in loss of array gain significantly. To address the problem of environmental mismatch and target motion, a robust motion compensation algorithm and a system scheme for adaptive matched field processing have been developed. Both Numerical simulation and analysis of experimental data demonstrates that the robust AMFP scheme could suppress surface loud interferences and improve the detection performance for underwater weak moving targets in complex shallow water.

分 类 号：TB56[交通运输工程—水声工程]