Geometrical interpretation of the localization performance of a sonobuoy system

摘要

This is an explorative paper which focuses on the accuracy of locating an underwater acoustic source using the broadband information collected at arbitrarily positioned, submerged, omnidirectional hydrophones. The paper presents expressions for the localization-error covariance of an optimally weighted least- square-error estimator for two sources of error: ocean acoustic noise and sensor perturbations. The performance measure used for comparisons is the mean square euclidean localization error, which is the trace of the localization-error covariance matrix.