宽频带水声信号目标回波建模与仿真研究

宽频带信号的目标回波携有的目标信息量大,混响背景相关性弱,有利于目标检测、参量估计和目标特征提取,可实现目标的精确测距和测速以及目标识别。该文对宽频带水声信号目标声回波特性进行了研究,给出了海洋传输信道和目标散射信道的系统函数,在此基础上建立了宽频带目标回波模型,并进行了计算机仿真,仿真结果也显示了回波信号携有目标信息量大的特性。

Modeling and Simulation for Target Echo of Broadband Acoustic Signal

The target echo of broadband signal contains more information and is of weaker reverberation background correlation,which benefits target checking,parameter estimation and extraction of target characteristics,and therefore benefits the realization of accurate measurement of target range and speed,as well as targe identification.This paper analyzes the target echo features of broadband acoustic signal,presents the system functions of ocean transmission channel and target scattering channel,and thus establishes a target echo model of broadband.The simulation result shows that the target echo contains more target information.