摘要
为了分析水文条件对主动水声探测系统信号的影响,首先利用射线声学理论和BELLHOP模型,求解实测海洋水文数据下的本征声线,然后选取主要声线所携带的幅度、时延、相位等信息构建点目标回波信号模型。仿真分析给出了发射单频正弦脉冲下的点目标回波仿真波形,并与实测波形进行了对比。计算结果表明,基于水文条件的点目标回波模型可以很好的模拟水文条件对水声信号的影响。
To analyze the influences of hydrological conditions on the signal of an active hydroacoustic detection system, the ray acoustic theory and BELLHOP models are employed to solve the eigenray from measured oceanic hydrological data. A point target echo model is built with the information of amplitude, time-delay, and phase, which are carried by the main eigenray. The point target echo waveform is obtained from numerical simulation in the case of transmitting single-frequency sine impulse, and is compared with the measured waveform. Computational results show that the point target echo model based on hydrological conditions is applicable to simulate the influences of hydrological conditions on underwater sound signal.
出处
《鱼雷技术》
2015年第4期311-315,共5页
Torpedo Technology
关键词
水文条件
目标回波
本征声线
hydrological conditions
target echo
eigenray
