Multitarget detection using spatial synthesis joint transform correlation

A spatial synthesis method that improves accuracy of detection for joint transform multitarget recognition is discussed. The reference function used for the conventional joint transform correlation is replaced by a synthesized function for sharpening correlation profiles without the use of a filter in the Fourier domain. It is shown that the synthesized function can be truncated spatially to fit multiplereference applications and that the effectiveness of this technique is not affected by the number of references. The implementation of the synthesized function, effects caused by noise disturbance, background cluttering, and spectral fringe binarization are investigated.