朗伯三锥体的激光后向二维散射成像仿真  

Laser Backward 2D Scattering Imaging Simulation of Lambertian Triconic

作　　者：宫彦军[1] 杨文铧 GONG Yanjun;YANG Wenhua(College of Intelligent Manufacturing,Hunan University of Science and Engineering,Yongzhou 425199,China)

机构地区：[1]湖南科技学院智能制造学院,湖南永州425199

出　　处：《长春大学学报》2023年第12期14-19,共6页Journal of Changchun University

基　　金：国家自然科学基金项目(60371020)。

摘　　要：利用目标激光后向散射光强的表达式推导激光后向二维散射成像公式,在计算朗伯三锥体的激光后向散射光强表面积分的公式中增加窗函数得到朗伯三锥体的激光后向二维散射成像公式。根据成像单元的激光散射强度获得图像结果,把最高强度的灰度级设定为255,其他强度等比例缩小,得到256级灰度图像。提出两种成像方法:统一积分法、差异积分法。统一积分法得出的成像结果有缺陷,差异积分法仿真出来的图像克服了这个缺陷。利用射线跟踪解决三锥体面元之间的遮挡问题。The laser backward two-dimensional scattering imaging formula is derived by using the expression of the laser backward scattered light intensity of the target.The laser backward two-dimensional scattering imaging formula of lambertian triconic is obtained by adding window function to the surface integral formula for calculating the laser backward scattered light intensity of lambertian triconic.The image results are obtained according to the laser scattering intensity of the imaging unit,and 256 gray level images are obtained by setting the gray level of the highest intensity to 255 and reducing other intensities in equal proportion.Two imaging methods are proposed,one is uniform integral method and the other is difference integral method.The imaging result obtained by uniform integral method has a defect,and the image simulated by difference integral method overcomes this defect.The occlusion problem between face elements of triconic is solved by ray tracing.

关 键 词：朗伯体 三锥体 激光二维成像 激光散射 

分 类 号：O439[机械工程—光学工程] TP391.9[理学—光学]