目标回波强度测量不确定度分析  

Uncertainty Analysis of Target Echo Strength Measurement

作　　者：陈立纲 CHEN Ligang(Naval Equipment Department,Shanghai Military Representative Office in Hangzhou Area Military Representative Office,Hangzhou 310012,China)

机构地区：[1]海军装备部驻上海军事代表局驻杭州地区军事代表室,浙江杭州310012

出　　处：《电声技术》2024年第12期28-33,共6页Audio Engineering

摘　　要：首先,介绍直接测量法和回波转发测量法这两种经典的水下目标回波强度测量方法,重点分析其原理。其次,分析这两种测量方法的测量不确定度,包括测量方法误差和偶然误差两种因素。最后,通过蒙特卡洛仿真实验与声场仿真评估目标强度测量不确定度影响因素,并证实多途效应引起的偶然误差变化范围小于2 dB,为实际工程应用提供了一定的参考。Firstly,this paper introduces two classical methods for measuring the echo intensity of underwater targets,direct measurement and echo forwarding measurement,and emphatically analyzes their principles.Secondly,the measurement uncertainty of these two measurement methods is analyzed,including measurement method error and accidental error.Finally,the factors influencing the uncertainty of target intensity measurement are evaluated by Monte Carlo simulation experiment and sound field simulation,and it is confirmed that the range of accidental error caused by multipath effect is less than 2 dB,which provides some reference for practical engineering application.

关 键 词：目标回波强度测量 直接测量法 回声转发测量法 测量不确定度 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]