摘要
将散射体在高斯脉冲平面波激励下感应电流的时域响应展开为连带Her mite级数的叠加 ,利用傅立叶变换和连带Hermite函数的自反性 ,得到与时域响应形式类似的感应电流的频域响应。根据时域解与频域解的对应关系 ,利用感应电流的早时响应和低频响应 ,可确定展开式的未知系数 ,从而同时获得了时域和频域的完全响应。
The time domain response of the induced currents on a scatterer illuminated by a Gaussian pulse plane wave is expanded as a repeated addition of associate Hermite series in this paper. The isomorphism of associate Hermite function and its Fourier transform allow one to work out the frequency domain response similar to the time domain expansion. Using the corresponding relation between time and frequency domains analysis, and early time and low frequency data of the induced currents, the unknown coefficients in the expansion series can be decided, thereby the entirety responses in both time and frequency domains can be obtained simultaneously.
出处
《电波科学学报》
EI
CSCD
2002年第4期337-340,共4页
Chinese Journal of Radio Science
基金
高科技发展计划基金资助项目 (2 0 0 2AA731181)
