A Real-Time Parallel Optical Processing Technique

Numerous parallel processing capabilities of holography have been described [1], [2]. Certain of these which are inherent in a (holographic) synthetic aperture radar [3]-[7] have also been discussed [8], including its parallel (simultaneous) phase curvature adjustments for all near-field reflecting objects, and its automatic (and parallel) adjustment of the (synthetic) aperture size so as to cause the metric resolution to be independent of range. It is here suggested that a real-time hologram reconstruction tube [9] could be incorporated to advantage in certain synthetic aperture systems.