摘要
宽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,有利于目标检测和特征提取。本文研究宽带水声信号目标回波特性,建立宽带多亮点目标回波模型,并进行了计算机仿真。设计开发了宽带多亮点目标的回波模拟器,该系统能对目标回波强度、多普勒效应、脉冲展宽等参数进行精确模拟,并且能实时完成对信号参数及信噪比的控制,具有实时性好、控制精度高、动态范围大和人机交互性强等特点,能较好地实现宽带多亮点回波的模拟。
Wideband signal target echo have much more target information quantity. And its reverberation pertinence weakness is available to target detecting and characters extracting. Based on the research of wideband signal target echo character, its multi-highlight echo model is presented and its performance is investigated by simulation method. A wideband echo simulator is designed. It could simulate echo intensity, Doppler effect, pulse stretching and the others accurately,its signal parameters and SNR could be real-time changed. The simulator have perfect realtime performance, high control precision, broad dynamic range and good man-machine conversation performance. It could simulate wideband signal multi-highlight target echo accurately.
出处
《舰船科学技术》
北大核心
2008年第2期165-168,共4页
Ship Science and Technology
基金
海军“十一五”预研资助项目(4010703010102)
关键词
回波模拟
目标特性
声呐
echo simulation
target characteristic
sonar
