Long-wave holography in real time

The paper reviews problems associated with the design and development of high-speed devices for the recording of long-wave holograms and image reconstruction in the acoustical and microwave ranges. Experimental results show that the use of digital reconstruction and advanced processing techniques can lead to a maximum spatial resolution of close to one wavelength. The design of matrix systems for the recording of acoustical and microwave holograms is considered; and a description is given of a special-purpose computer for controlling multichannel data collection and image reconstruction. Ways to increase the operating speed of these systems are considered; specifically, the use of analog SAW and CCD elements is discussed.