光栅参数与小波谱值的关系  

Relationship between grating parameters and wavelet spectrum values

作　　者：印勇[1] 田逢春[1] 陈梨[2] 

机构地区：[1]重庆大学通信工程学院,重庆400030 [2]重庆通信学院,重庆400030

出　　处：《重庆大学学报（自然科学版）》2008年第8期881-884,896,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(60472037)

摘　　要：推导了光栅参数与小波频谱值之间的数学关系。采用矢量衍射理论和标量衍射理论两种方法分别计算光栅的衍射效率,并分析两者近似相等的条件,导出光栅参数和小波谱值的关系。以墨西哥帽小波为例计算平面透射光栅的狭缝宽度,获得平面透射光栅参数、衍射效率和墨西哥帽小波谱值的关系。The relationship between grating parameters and wavelet spectrum values was deduced. Firstly, the vector diffraction theory and scalar quantity diffraction theory were used to calculate the diffraction efficiency. The approximately equal conditions were analyzed next. Finally, the relationship was obtained. The gap width of the plane transmission grating was calculated with the Mexico-hat wavelet. The relationship among the parameters of the plane transmission grating, diffraction efficiency and Mexico-hat wavelet values was obtained.

关 键 词：衍射光栅 小波变换 谱分析 衍射效率 光学小波 

分 类 号：TN247[电子电信—物理电子学]