基于功率谱相减实现无零级衍射的联合变换相关器  

Realization of no zero-order joint transform correlator based on joint power spectrum subtraction

作　　者：张勇 方兴桥 刘克功 武红[2] 

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光电工程系,北京100081

出　　处：《光学技术》2007年第6期807-809,共3页Optical Technique

基　　金：总装军械研究所资助项目(424114E)

摘　　要：联合变换相关器的零级衍射光斑会影响相关峰探测。将参考目标和待识别目标的联合功率谱与参考目标本身的功率谱做相减运算可消除零级衍射光斑,可提高联合变换相关器的识别能力。通过计算机仿真和实验验证了该方法的可行性。Zero-order diffraction light spot can influence the detection of the correlation peak in joint transform correlator. The subtraction method of joint power spectrum of reference object and target object from the power spectrum of reference ob- ject can smooth down the zero-order diffraction and improve the recognition ability of joint transform correlator. Computer simu- lation and experiment results show the feasibility of the method.

关 键 词：联合变换相关器 功率谱相减 零级衍射 

分 类 号：TN911.74[电子电信—通信与信息系统]