OPTIMUM TARGET DETECTION USING A SPATIAL-DOMAIN BIPOLAR COMPOSITE FILTER WITH A JOINT TRANSFORM CORRELATOR

Synthesis of a spatial-domain bipolar composite filter (SBCF) using si mulated annealing algorithm is presented. Since a SBCF is a spatial-do main filter, it is very suitable for implementation in a joint transfo rm correlator. To alleviate the stringent control requirement of a pha se-modulated spatial light modulator (SLM), a position-encoding techni que is used to generate the SBCF as well as the input objects. Experim ental demonstrations are also provided, in which it is shown that the SBCF has a higher discrimination capability of extracting the target o bjects against the antitarget objects.