一种水下主动探测系统的模拟预处理机设计

模拟预处理机是水下主动探测系统的关键部件。针对水下主动探测系统的应用，设计了一种模拟预处理机．该电路采用分级放大结构，并使用两级滤波器对信号进行滤波处理，在达到对信号放大倍数要求的同时避免了放大器自激．采用噪声性能好的AD867X系列芯片有效抑制了电路噪声对信号的影响。分析了该模拟预处理机的工作原理，给出了电路结构图，选择了芯片，调试检测结果表明，电路工作正常，性能指标达到要求。

Analog Pretreatment Circuit Design for Underwater Active Detection System

Analog pretreatment circuit is one of the key components of underwater active detection system. Aimed at the use of underwater active detection system, an analog pretreatment circuit is designed. More than one amplifier and two filters are used to process the signal. The signal can be amplified and self-excitation is avoided. The series of AD867X are used to restrain the circuit noise. The operation principle of the circuit is analyzed, and the structural drawing is introduced. The result of the debugging a...