重建有耗單層媒質(zhì)和背景媒質(zhì)的回歸圓方法
REGRESSION-CIRCLEMETHOD FORRECONSTRUCTING ONE-LAYERLOSSY MEDIUM AND THE BACKGROUND MEDIUM
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摘要: 本文提出重建有耗單層媒質(zhì)的回歸圓方法。在高頻部分,以波數(shù)k為因變量的反射系數(shù)軌跡形成一個(gè)圓,根據(jù)圓心和半徑,不需使用任何數(shù)值方法即可重建出媒質(zhì)特性。此方法既適用于已知復(fù)反射系數(shù)譜,又適用于只知道反射系數(shù)振幅情況,從而使本方法更實(shí)用。
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關(guān)鍵詞:
- 有耗媒質(zhì); 回歸圓; 重建; 振幅重建
Abstract: A new method for reconstructing lossy medium by regression circle technique is presented. In high frequency region, the locus of the reflection coefficient as a function of the wave number in the complex plane yields a circle, from which some properties of the medium can be reconstructed without recourse to any numerical techniques. The method not only can be applied to the complex reflection spectrum but also can be adapted to treat the amplitude spectrum alone, therefore it makes the method more practicactical. -
Toru Uno, Saburo Adachi, IEEE Trans. on AP,AP-35(1987)12, 1456-1466.[2]李世智,張宇志,電子學(xué)報(bào),18(1990)1,93-98. -
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