摘要
为提高双基地声纳系统性能,混响级预报至关重要。在全向发射不同接收指向条件下推导出散射面积计算公式,考察了此时椭圆环上的散射面积、散射强度、传播损失与接收角之间的关系。根据双基地海底混响的几何模型和声纳方程,推导出双基地海底的混响级预报公式。给出窄波束接收时,双基地声纳混响级系数随接收角度和基线长度的变化规律。仿真结果表明,双基地海底混响与接收角度、基线长度等因素有关。
In order to improve the performance of the bistatic sonar, the forecast of the reverberation level is very important. The scatter area is deduced in the conditions of the non-directional-source and different directivity of the receiver. The relationship of the scattering area, the scattering intensity, the transmit loss and the directivity of the beam with the received angle in the same condition is studied. The expression of the reverberation level is deduced with the geometry of the bistatic sonar and the sonar equation. The reverberation level versus the angle and basic line in the circumstances of the narrow beam is obtained. The simulation shows that the bistatic reverberation is related to the receiving angle, the distance of source from receiver, and so on.
出处
《舰船电子工程》
2009年第10期165-167,共3页
Ship Electronic Engineering
关键词
双基地声纳
混响级预报
散射面积
bistatic sonar, forecast of the reverberation, scattering area
