OPTOELECTRONIC PROCESSORS WITH SCANNING C CD PHOTODETECTORS

Two new types of optoelectronic radio-signal processors were investiga ted. Charge-coupled device (CCD) photodetectors are used in these proc essors under continuous scanning conditions, i.e. in a time delay and storage mode. One of these processors is based on a CCD photodetector array with a reference-signal amplitude transparency and the other is an adaptive acousto-optical signal processor with a linear frequency m odulation. The processor with the transparency performs multichannel d iscrete-analogue convolution of an input signal with a corresponding k ernel of the transformation determined by the transparency. If a light source is an array of light-emitting diodes of special (stripe) geome try, the optical stages of the processor can be made from optical fibr e components and the whole processor than becomes a rigid 'sandwich' ( a compact hybrid optoelectronic microcircuit). A report is given also of a study of a prototype processor with optical fibre components for the reception of signal from a system with antenna aperture synthesis, which forms a radio image of the Earth.