基于空域啁啾编码频域平行光斜照射的联合变换相关器

Joint Transform Correlator Based on Chirp Modulation and Slantwise Parallel Wave Illumination Power Spectrum

针对经典联合变换相关器的缺陷,提出了基于空域啁啾编码频域斜光束照射的联合变换相关技术.利用空域啁啾编码实现相关峰尖锐;频域平行光斜照射实现自相关峰边缘化、互相关峰中心化,不需要计算机进行数字处理,实时性强.理论分析和实验表明,该方法不仅能获得尖锐的相关峰,而且探测器上只保留了互相关峰,大大提高了识别能力和探测器的利用效率,同时使输入面的空间带宽得到更充分的利用.

Aiming at shortcoming of classic joint transform eorrelator,a joint transform correlator based on chirp modulation and slantwise parallel wave illumination the power spectrum was presented, which resuhsed in enhanced correlation peaks with chirp modulation of input image and centralizing relative correlation peaks by slantwise parallel wave illumination the power spectrum. The method did not need digital process with computer and was real-time. The theoretical analysis and experiment results show that better peaks and only one relative correlation peak on the detector are obtained, which improve greatly recognition ability and make use of detector and input plane.