位相编码振幅调制联合变换相关器的设计

采用位相编码技术减小了经典联合变换相关器中的直流分量 ,及多目标输入时各目标图像之间的互相关项 ,并且同时消除了参考图像和各目标图像之间的共轭相关项。通过对联合功率谱进行振幅调制 ,缩小了相关峰的宽度 ,锐化了相关峰 ,增强了识别能力。最后给出了计算机模拟结果。

Phase-encoded Joint Transform Correlator by Use of Amplitude-modulation

Using phase encoded technique, the proposed joint transform correlator reduces greatly the strong dc component and cross correlations between each input target, and the conjugate cross correlation between the reference and input targets, which are existing in the classical joint transform correlator. All these achievements are accomplished in only one step. With the use of amplitude modulation, the correlation output is bettered greatly in terms of correlation width, correlation peak sharpness, and anti noise ability. At the end, computer simulation is given which proved the efficiency of the proposed method.