说明：  换能器散射回波信号声强预测，可自拟发射和接收换能器的类型及指向性，海底散射强度，得到不同条件下的散射回波信号声强
(Transducer scattering echo sound intensity forecasts can be self-transmitting and receiving transducers of the type and point to the seabed scattering intensity, obtained under different conditions of scattering echo signal sound intensity)