实时高效联合变换相关器

提出一种利用光学波分复用器实现实时高效联合变换相关的方案。通过计算机控制把输入面分为多个大小相等的窗口，分别写入参考与目标图像，利用光学波分复用器于相关系统中，使对应不同窗口的读出光学信息在第一个焦面上形成联合功率谱阵列，在输出面上可以实时地获得增强了相关信号。

Real-Time High-Efficiency Joint Transform Correlator

A technique of using optical wavefront-division multiplexer to realize highefficiency joint transform correlation is proposed in this paper. The input plane of thesystem is divided into many equal perts by computer, and in every part the reference andthe input images displayed side by side. An optical wavefront-division multiplexerused in this system makes the optical information read out from different ports to form apower spectral array at the focal plane of the first Fourier transform lens. As a result,enhanced optical correlstion signal is obtained at the output plane. The proposed real-timehigh-efficiency joint transform correlator (JTC) can use the physical area of the liquidcrystal light valves (LCLVs) as well as the readout lightmore efficiently. The principle ofthe system has been analyzed. The design of the optical wave front-division multiplexerand the experimental resultS of the system are given.