摘要
海面混响是影响浅海主动声呐探测的主要因素,应对海面混响展开研究。根据海面混响形成机理对频率、掠射角、风速以及气泡半径等多种因素的影响,在单元散射模型的基础上建立了海面混响散射模型。推导了海面散射强度一般表达式,给出了不同状况下海面散射强度的具体形式。通过计算机仿真给出了散射强度随各种参数的变化关系及不同海面散射作用下的混响波形。利用混响模型明确反映了海面散射强度与各参数的关系以及海面混响的衰减变化,为探测声纳提供了必要的依据。
Surface reverberation is the main interference of shallow water active sonar detecting. Therefore, the research of surface reverberation is necessary. According to the formation mechanism of surface reverberation, surface reverberation model is built based on cell scattering model. The model eonsideres the effects of grazing angle, fre- quency, wind and bubble radius. Surface scattering strength general expression is derived and the definite forms of surface scattering strength in different surface scattering situation is given. The changing trend between ＇surface scat- tering strength with grazing angle, frequency, bubble radius and the reverberation waveform of different surface scat- tering situations are simulated. Through computer simulation, the relationship between surface scattering strength and kinds of parameters, and the decay trend of the surface reverberation are varified.
出处
《计算机仿真》
CSCD
北大核心
2014年第7期161-164,共4页
Computer Simulation
关键词
海面混响
海面散射强度
散射模型
仿真
Surface reverberation
Surface scattering strength
Scattering model
Simulation
