水听器前置放大电路噪声溯源与建模分析  

Noise Tracing and Modeling Analysis of Hydrophone Preamplifier

作　　者：蒋展鹏 张浩 李小英[1] 罗乃冬 JIANG Zhanpeng;ZHANG Hao;LI Xiaoying;LUO Naidong(Research Institute of China Shipbuilding Industry Corporation,Hangzhou 310012,China)

机构地区：[1]中国船舶重工集团公司第七一五研究所,浙江杭州310012

出　　处：《电声技术》2022年第7期32-34,共3页Audio Engineering

摘　　要：在水声系统中,接收电子系统的噪声特性影响着设备的探测性能。前置放大电路作为传感器的微弱信号的接收端,其噪声特性对整个接收系统性能具有决定性作用。本文针对水听器前置放大电路开展噪声溯源研究,建立电路中参数的噪声模型。在此基础上,借助Mathcad软件对电路噪声进行分析,最终提出了一套噪声优化方法,并验证了噪声模型的准确性。In underwater acoustic system, the noise characteristics of receiving electronic system affect the detection performance of equipment. As the receiving end of the weak signal of the sensor, the noise characteristic of the preamplifier plays a decisive role in the performance of the whole receiving system. In this paper, the noise source of hydrophone preamplifier is studied, and the noise model of circuit parameters is established. On this basis, the circuit noise is analyzed with Mathcad software, and finally a set of noise optimization method is proposed, and the accuracy of the noise model is verified.

关 键 词：前置放大电路 噪声溯源 噪声优化 

分 类 号：TN912.1[电子电信—通信与信息系统]