摘要
本文研究具有粗糙表面凸形物体的光频后向散射。由几何光学——基尔霍夫近似,获得相干后向散射截面和非相干后向散射截面理论计算公式。以粗糙球和粗糙椭球为例分析了物体几何参数,介电常数和粗糙表面统计参数对红外激光后向散射截面的影响。
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.
关键词
红外激光
激光雷达
粗糙度
散射面
Infrared laser
LRCS (Laser rader (scanering) cross-section)
Roughness
