摘要
瞬态声散射信号包含有较丰富的目标信息。本文研究了克服时域积分方程法计算瞬态声散射中存在的长时间解发散问题的方法，给出了一种实用的算法，使得计算结果在时间较长时都稳定。将时域积分方程法推广到阻抗表面的情况，计算了带半椭球帽的阻抗圆柱体的瞬态反向声散射。计算结果表明，目标的瞬态回波具有亮点特征．
Transient acoustic scattering contains rich information about objects. This paper studied thedivergence in computation of the transient acoustic scattering by use of the time domain integral equationmethod. A calculation technique provided stable results for a long time calculation is presented. Weextended the time domain integral equation method to the impedance object, and computed the transientacoustic backscattering of a hard and an impedance cylinder with a spheroidal end cap. The results showthat the transient echoes have features of the highlight.
出处
《声学学报》
EI
CSCD
北大核心
1999年第3期314-320,共7页
Acta Acustica
基金
国防科工委基金
