Response characteristics of sonar receiver under intense sound pulse

作     者：Kaizhuo Lei Qunfei Zhang Ziliang Qiao Lingling Zhang Qiang Huang Shiqing Wang 

作者机构：College of Marine Engineering Northwestern Polytechnical University Xi' an 710072 P. R. China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2012年第23卷第6期

页      面：843-848页

核心收录：

学科分类：082403[工学-水声工程] 08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 0824[工学-船舶与海洋工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Natural Science Foundation of China (10974154) the National Innovation Project of China for Undergraduates (101069935) 

主　　题：sonar receiver response characteristic simulationand experiment strong interference intense sound pulse (ISP),automatic gain control (AGC). 

摘      要：For anti-jamming and anti-countermeasure techniques of the sonar receiver, the response characteristics of the automatic gain control （AGC） circuit and the survivability of the prime circuit under strong interference are analyzed by simulations and experiments. An AGC simulation model based on the voltage control amplifier VCA810 prototype is proposed. Then static and dynamic simulations are realized with single frequency signal and linear frequency modulated （LFM） signal commonly used in the active sonar. Based on intense sound pulse （ISP） interference experiments, the real-time response characteristics of each module of the receiver are studied to verify the correctness of the model as well as the simulation results. Simulation and experiment results show that, under 252 dB/20 μs ISP interference, the specific sonar receiver will produce sustained cut top oscillation above 30 ms, which may affect the receiver and block the regular sonar signal.