19 Performance Analysis of Pulse Signal Detection by Using Torpedo Flank Array Available to Purchase

Performance of underwater target detection and bearing estimation by using torpedo flank array sonar has been investigated in this paper. With respect to tackle the problem of passive detection, sonar equation has been exploited to analyze the passive detection capability of torpedo flank array sonar receiving active pulse signals transmitted by the surface ships under medium hydrological conditions in shallow water. The influence of both sonar parameters and signal processing parameters has also been evaluated via theoretical way. Furthermore, the performance of bearing estimation using conventional signal processing techniques has been analyzed. The results show that the surface ship can be detected as far as dozens of kilometers away from torpedo by interception of the active pulse signals which often used to detect the modern silent submarine in anti-submarine warfare (ASW), and the bearing estimated by the flank array sonar can also be used for torpedo guidance due to its high accuracy.