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We design a multichannel polychromatic nonzero-order joint transform correlator (NOJTC). The system is implemented using a general JTC scheme by the design of an ideal reference function and additional power-spectrum subtraction strategy for a multichannel correlator. We test the performance for noise and distorted images in the input. In addition, the introduction of various numbers of images in the training set is investigated. The multichannel polychromatic NOJTC shows better detection ability over conventional systems.

A multi-channel polychromatic non-zero-order joint transform correlator (NO JTC) with minimum average cross-correlation energy is introduced. The system is implemented using a general J T C scheme with additional power-spectrum subtraction strategy and the design of an ideal reference function with a Lagrange multipliers technique. As the zero-order part is removed, the desired correlation peaks can be quite distinctive and sharp.T h e correlator also shows the advantage of better detection ability over monochromatic systems.

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