An Interference Suppression Based Bearing-only Multiple Target Tracking for Passive Sonar

In this paper, an interference suppression based bearing-only multiple target tracking (IS-BOT) method for passive sonar is proposed. In the IS-BOT method, the multiple target tracking (MTT) issue is considered as a series of parallel single target tracking issues in the presence of interferers. For every target of interest (TOI), there is an interference suppression (IS) module, which is outside the tracking module, being employed to eliminate the interference radiated from the other targets. The tracking module is responsible for smoothing the bearing traces and its predictive function is employed in traces crossed condition. Furthermore, a closed loop feedback structure is developed, which acts as an information bridge, to render the information shareable between IS and tracking modules in real time. Finally, the sea trial results show that the IS-BOT method can achieve precise real-time MTT.