基于BRDF条件下卫星可见光散射特性分析  

Visible Light Scattering of Satellite Based on Bidirectional Reflectance Distribution Function

作　　者：杨明[1] 韩磊[2] 吴晓迪[1] 吕相银[1] 

机构地区：[1]电子工程学院安徽省红外与低温等离子体重点实验室,安徽合肥230037 [2]武汉军械士官学校,湖北武汉430075

出　　处：《激光与光电子学进展》2010年第11期135-139,共5页Laser & Optoelectronics Progress

基　　金：安徽省红外与低温等离子体重点实验室基金(2007A012012F)资助课题

摘　　要：引入双向反射分布函数(BRDF)分析卫星可见光散射特性。建立卫星结构模型并分析了太阳在大气层外可见光辐射照度,将单一波长BRDF测量方法扩展到可见光波段的加权平均测量,利用BRDF经验模型和实验获得的表面样片的实验数据,数值求解出卫星表面材料的BRDF的三维特性。最后分别在漫反射和非漫反射两种条件下,计算出卫星可见光散射强度的空间分布,为空间目标的可见光探测与识别提供依据。Visible scattering characteristics of a space satellite are studied based on bidirectional reflectance distribution function（BRDF）.A physical model of satellite is established and spectral irradiance in the visible solar spectrum is analyzed.Measuring method of single-wavelength BRDF is extended to average BRDF in visual band.Based on empirical model and experimental values,three dimensional scattering characteristics of the satellite surface material are calculated.Spatial distribution of visible scattering intensity is obtained under the diffuse reflection and non-diffuse reflection.The result offers support for the detection and recognition of spatial objects.

关 键 词：散射 双向反射分布函数(BRDF) 空间分布 卫星 

分 类 号：V418[航空宇航科学与技术—航空宇航推进理论与工程]