One of the major advantages of an optical processor is its inherent two-dimensional processing capability, which offers myriad high-spatial-resolution parallel processing operations. One of the applications is synthetic aperture radar processing, as described in Chapter 14. It is therefore reasonable to utilize the two-dimensional processing ability of optics for a large time-bandwidth signal application. Similar to the scanned radar image format, a broadband time signal can be obtained with a raster scan format for information processing. In other words, by converting a long string of large time-bandwidth signals into a two-dimensional raster scan format, a wideband time signal analysis can be continuously carried out with a conventional two-dimensional optical data processor.