应用声学
應用聲學
응용성학
APPLIED ACOUSTICS
2010年
2期
122-128
,共7页
海豚%散射%目标强度%肺
海豚%散射%目標彊度%肺
해돈%산사%목표강도%폐
Dolphin%Backscattering%Target strength%Lung
国内对蛙人和大型海洋哺乳动物声散射特性的研究很少,无法满足现代的防御需要.论文分析了海豚的回波机理,建立了海豚反向散射目标强度的球壳散射模型.采用比较法测得海豚对75kHz的声波反向散射目标强度为-25.8dB.根据实验结果,球壳散射模型对75kHz声波是适用的.
國內對蛙人和大型海洋哺乳動物聲散射特性的研究很少,無法滿足現代的防禦需要.論文分析瞭海豚的迴波機理,建立瞭海豚反嚮散射目標彊度的毬殼散射模型.採用比較法測得海豚對75kHz的聲波反嚮散射目標彊度為-25.8dB.根據實驗結果,毬殼散射模型對75kHz聲波是適用的.
국내대와인화대형해양포유동물성산사특성적연구흔소,무법만족현대적방어수요.논문분석료해돈적회파궤리,건립료해돈반향산사목표강도적구각산사모형.채용비교법측득해돈대75kHz적성파반향산사목표강도위-25.8dB.근거실험결과,구각산사모형대75kHz성파시괄용적.
There is little domestic study on the scattering characteristics of divers and large-scale oceanic mammals, while much information is needed for defence. The scattering mechanism of a dolphin is analyzed, and a Spherical-Shell Scattering Model is proposed to caculate the backscattering TS(Target Strength) of a dolphin. Measurement of the backscattering TS of a dolphin at 75 kHz was taken, which gave -25.8dB. Judged by the result of the experiment, the Spherical-Shell Scattering Model is suitable at 75kHz.
