提出了一种高鉴别能力的实时光学相关器，它采用液晶光阀（ＬＣＬＶ）作为实时输入器件，并利用其非线性变换特性对图像微分预处理；全息记录材料采用光折变晶体，且使用会聚球面波作参考光。所给出的实验结果表明，该光学相关器具有鉴别能力高、实时性和灵活性强，以及结构紧凑的特点 A real-time optical correlator with high discrimination ability is proposed, which uses liquid crystal light valve (LCLV) as a real-time input device and uses its non-linear transformation characteristic to pre-process the image differential. The holographic recording material adopts photorefractive crystal, Convergence spherical wave for reference light. The experimental results show that the optical correlator with high discrimination ability, real-time and flexibility, and compact structure