Aiming at the correlation problem between AIS system and passive sonar track，this paper proposes a correlation algorithm based on fuzzy mathematics. This algorithm introduces the concept of AIS track reliability， and proposes the membership function and weight distribution that affect the correlation of three factors，including the angle，distance and track reliability between the ship and the passive sonar. Through experimental verification， the algorithm can better realize the track correlation between AIS and passive sonar，which provides a reference for the review analysis and automatic processing of passive sonar signals.
