Moving sound source localization in large areas

This paper presents a sound source localization method that considers the limited propagation speed of sound. The localization system is shown to be independent of source movement. Information from a sound source is received with a propagation delay relative to the receiver distance. Combining information from spatially separate sensor stations utilizing propagation delays offers a realistic approach to passive sound source localization. The discussed bearings-only localization method uses the direction of arrival information received from a network of sensor stations. It is shown that incorporating a simple propagation model into large area localization results in better performance than neglecting it. The increase of computational capacity has made the implementation of the discussed non-analytical method feasible.