摘要
本文利用激光散射自动测量系统，对经喷丸处理后的钢基粗糙表面及其喷漆表面的后向激光雷达散射截面（ＬＲＣＳ）进行了测量。测量波长分别为λ＝６３３ｎｍ和λ＝９０４ｎｍ。在λ＝９０４ｎｍ，利用粗糙面电磁散射理论的基尔霍夫方法对上述样片进行了理论计算，其中将粗糙表面视为双尺度模型，根据驻留相位法和标量近似法理论计算双尺度模型随机粗糙表面的散射强度角分布。
We present the experimental results on the laser back scattering characteristics,such as laser radar cross section,of very rough surface of steel and coated surface at λ =633nm and λ =904nm with a laser scattering automatic measurement system.Based on scattering theory of rough surface,we built up the double ruler model of the rough surface,and utilize phase method and scalar approximate method of Killhoff theory to theoretically calculate the angle distribution of laser back scattering intensity for a specimen of rough surface,at λ =904nm.The experimental results are well agreement with theoretical calculation.
出处
《激光技术》
CAS
CSCD
北大核心
1997年第3期151-155,共5页
Laser Technology
基金
国防科技预研基金
关键词
激光雷达截面
粗糙面散射
后向散射
测量
光散射
LRCS(Laser Radar Cross Section) rough surface scattering back scattering measurement light scattering
