光学技术, 2007, 33 (6): 0807, 网络出版: 2010-06-03
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
联合变换相关器 功率谱相减 零级衍射 joint transform correlation joint power spectrum subtraction zero-order diffraction
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。
Abstract
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 object can smooth down the zero-order diffraction and improve the recognition ability of joint transform correlator. Computer simulation and experiment results show the feasibility of the method.
张勇, 方兴桥, 刘克功, 武红. 基于功率谱相减实现无零级衍射的联合变换相关器[J]. 光学技术, 2007, 33(6): 0807. ZHANG Yong, FANG Xing-qiao, LIU Ke-gong, WU Hong. Realization of no zero-order joint transform correlator based on joint power spectrum subtraction[J]. Optical Technique, 2007, 33(6): 0807.
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