Response characteristics of sonar receiver under intense sound pulse  

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

机构地区：[1]College of Marine Engineering, Northwestern Polytechnical University, Xi' an 710072, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2012年第6期843-848,共6页系统工程与电子技术（英文版）

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

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.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.

关 键 词：sonar receiver response characteristic simulationand experiment strong interference intense sound pulse （ISP） automatic gain control （AGC）. 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置] U666.7[自动化与计算机技术—控制科学与工程]