双基地声纳海底混响面元划分与建模

Scattering Cell Division and Modeling for Bottom Reverberation in Bistatic Sonar

鉴于影响双基地声纳性能主要因素之一的混响面元的划分和计算的研究少有公开报道,提出一种双基地声纳海底混响区域的面元划分方法,建立了基于SSA海底散射强度模型的双基地声纳海底混响模型。仿真结果表明该方法能够对产生混响的海底区域进行有效地估算,并得到双基地声纳海底混响随时间的变化趋势,为双基地声纳系统的性能评估和合理配置、使用提供了有效的模型。

The performance of bistatic sonar is influenced by the bottom interface side-scattering area. However, scattering cell division and calculation is rarely reported. Therefore, an algorithm of scattering cell division for bottom interface side-scattering in bistatic sonar is proposed and the bottom reverberation model in bistatic sonar based on SSA scattering strength is developed. With this algorithm, the side-scattering area is estimated effectively and the changing rule of bottom interface side-scattering area with time, receiving direction and receiving beam width are obtained. The simulation results show that this algorithm is feasible and can offer effective model for performance evaluation and reasonable configuration of bistatic sonar.