摘要
给出了收发分置式声纳系统混响的一种仿真方法,首先推导出收发分置式声纳系统的体积混响、海面混响、海底混响的等效平面波混响级公式,并由等效平面波混响级公式计算出平均声强度衰减规律,与由声线法计算平均声强度衰减规律相比,仿真实现时计算更简单。并对仿真结果进行了平均混响强度衰减规律分析和统计特性与时间相关特性检验,与理论值相比较具有一致性,为收发分置式声纳系统的目标检测、信息传输技术研究提供理论依据。
A method of reverberation simulation for bistatic sonar system is proposed.The formula of equivalent plane-wave reverberation level is deduced in this method,which can be applied to volume reverberation,sea-surface reverberation,and sea-floor reverberation for bistatic sonar system.The attenuation law of average acoustics intensity is calculated by the equivalent plane-wave reverberation level.It is a simple calculation method for the simulation realiza-tion compared to the attenuation law of average acoustics intensity calculated by ray theory.Then the attenuation law of average acoustics intensity,the statistic characters and the time correlation of the simulated reverberation signal are tested.Compared with the theoretical researches,the results are coincident with each other.It can provide theoretical basis for target detection and information transmission technology.
出处
《声学技术》
CSCD
2010年第4期355-360,共6页
Technical Acoustics
基金
黑龙江省自然科学基金(A200419)
关键词
收发分置
混响
混响级
信号仿真
bistatic
reverberation
reverberation level
signal simulation
