Multi-Submarines Detection Using Multistatic Sonar System

Submarines and underwater automatic vehicles (UAV) are becoming better at concealing themselves by reducing noise. There is strong necessity to detect enemy submarines and UAVs timely in protecting the maritime border. Active sonar has been used to detect enemy submarines and UAV. There are two typical types of such active sonar based on the geometry locations of transmitter and receiver named monostatic sonar and bistatic sonar system. In the monostatic scenario the transmitter and receiver transducers are collocated while it is called bistatic sonar system in the case if they are separate. Both sonar systems can be used in underwater object detection. In this paper, a target strength model is proposed to estimate multi-object in the same time. A model of target strength in [10] is referred which is originally designed to calculate the scattering wave from a single submarine scanning from full-angle. The proposed scheme here is effective in detecting the number of enemy submarines and the moving direction of submarine queue. Monto Carlo simulation has been used to show the performance of the proposed model.