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.
出处
《光学技术》
CAS
CSCD
北大核心
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
关键词
联合变换相关器
联合功率谱
相关峰
对数运算
joint transform correlator
joint power spectrum
correlation peak
logarithmic transformation
