Array invariant-based passive localization in shallow water through deconvolution spatial processing

Passive localization of underwater sound sources is an important research direction of sonar technology.Aiming at the underwater sound source localization,we propose an array invariant-based passive localization in shallow water through deconvolution spatial processing method.Blind deconvolution is used to extract time-domain Green 's functions from received radiated noise,and deconvolution method is used to extract the beam-time migration from the extracted time-domain Green functions.Then array invariants are calculated from the beam-time migration.Finally,sound source localization can be achieved.Different from the conventional array invariant method,this method can obtain a more accurate beam-time migration.The source-range estimation results from the simulation and experiment demonstrate that the proposed method is capable to improve the accuracy of source-range estimation dramatically,compared to the existing array invariant method.