Abstract: The use of multi-station aeronautical sonar composed of an active dipping sonar and passive buoys can save search time and improve search probability. In view of the demand to determine the area where the submarine target exists in a finite domain according to a probable known moving course of the target, this article proposes a search scope model of the multi-station sonar, a search model of the combined active/passive multi-station aeronautical anti-submarine of dipping sonar and buoys, and submarine moving models. It simulates and analyzes the influence of such factors as submarine initialization courses, sea environment noises as well as search manners on the searching probability in the experiments. The results show that submarine initialization course has comparatively little effect on the combined aircraft searching probability of a dipping sonar and buoys, while the factor of sea environment noises has a greater effect on it.

Key words: aeronautical anti-submarine, dipping sonar, buoys, searching probability, multi-station sonar