任意形狀粗糙物體的激光后向散射
LASER BACKSCATTERING BY AN ARBITRARILY SHAPED DIELECTRIC OBJECT WITH ROUGH SURFACE
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摘要: 本文研究具有粗糙表面凸形物體的光頻后向散射。由幾何光學(xué)基爾霍夫近似,獲得相干后向散射截面和非相干后向散射截面理論計(jì)算公式。以粗糙球和粗糙橢球?yàn)槔治隽宋矬w幾何參數(shù),介電常數(shù)和粗糙表面統(tǒng)計(jì)參數(shù)對紅外激光后向散射截面的影響。
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關(guān)鍵詞:
- 紅外激光; 激光雷達(dá)（散射）截面; 粗糙度
Abstract: The backscattering of light wave from arbitrary convex dielectric objects wich rough surface is investigated and the formulas for calculating the backscattering cross-section of both coherent and incoherent fields are obtained. In the infrared wave-band, the influence of the geometry, permittivity and statistic characteristics of the rough surface on LRCS is analysed, making use of rough spheres and ellipsoids as examples. -
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