Lucky detection and localization in a time-dependent medium

Spatio-temporal variations in the ocean can cause distortion to acoustic wavefronts that are detrimental to the detection and localization of signals of interest using a hydrophone array. Motivated by lucky processing, we will describe and demonstrate a method to show that measurements are spatially distorted in underwater acoustic data, those distortions are intermittent, and time windows during which the wavefronts are relatively undistorted and can be exploited using lucky processing. [Work supported by the Office of Naval Research.]