拖曳声纳的本舰噪声仿真

利用线性预测技术，以AR模型拟合指定功率谱的方法，分别对船舶噪声源中的平稳连续谱部分和时变调制谱部分进行了建模与仿真。采用多个点声源来模拟船体噪声源，按照各个声源的空间位置，并计及海底、海面对声场的一次反射作用，最后得到本舰在拖曳声纳基阵位置上的辐射噪声。

Vessel Noise Simulation of Towed Sonar

Based linear prediction technology, this paper applies the algorithm that fits the assigned power spectrum with AR model to model and simulates the part of vessel noise with stable and continuous power spectrum and the other part with time-variable power spectrum respectively. Lots of point sources are introduced in the simulation of vessel noise source. According to their spatial positions, these point sources and their mirror images created by the first reflection from sea surface and bottom are delayed and added to generate the received vessel noise by towed sonar array.