一种基于功率谱对数变换的联合变换相关器  

JTC based on logarithmic transformation to joint power spectrum

作　　者：张勇 刘克功[1] 武红[2] 冯广斌[1] 

机构地区：[1]军械技术研究所,石家庄050000 [2]北京理工大学信息科学技术学院,北京100081

出　　处：《光学技术》2006年第z1期401-403,共3页Optical Technique

基　　金：总装备部军械技术研究所基金资助项目

摘　　要：联合功率谱的高频成份对相关峰识别具有重要作用,实验中记录的联合功率谱随着频率的增加其强度迅速降低。为增强联合功率谱的高频成分,改善其调制程度,可对功率谱进行对数变换,从而有效保留更多的高频成份,压低零级衍射光斑,提高联合变换相关器的识别能力。The high frequency component of joint power spectrum plays the important role for the subsequent recognition to correlation peak.However,the intensity of high frequency component degrades quickly with the increasing of frequency.Logarithmic Transformation to Joint Power Spectrum can enhance the intensity of high frequency component,improve the modulation degree,weigh down the zero-order diffraction,and increase the recognition efficiency of joint transform correlation system.

关 键 词：联合变换相关器 联合功率谱 相关峰 对数运算 

分 类 号：TN911.73[电子电信—通信与信息系统]