Accession Number : ADA117160

Title :   Photonic Seeker Development.

Descriptive Note : Conference paper,


Personal Author(s) : Duthie,Joseph G ; Ashley,Paul R ; Upatnieks,Juris ; Liu,H K

PDF Url : ADA117160

Report Date : 18 Jun 1982

Pagination or Media Count : 11

Abstract : Experiments have been performed which indicate a means to extend significantly the number of matched filters which can be simultaneously addressed in the photonic correlator. Results indicate that a total of 200 independent images of the target can be interrogated in parallel. This corresponds to an effective computation of over 10 to the 13th power complex multiplications per second. The suggested method is mechanically simple, optically easy to implement, requires little power and can be fabricated into a compact unit. Improvement in the signal to noise of a photonic correlator can be achieved by using an achromatic transform system and a thermal light source. At this time, however, the throughput of such a system is not sufficient to make a practical device. Whereas, efforts should continue to develop techniques to correlate using thermal light sources, the principal thrust for making a field operational system should, at this time, be concentrated on the use of laser diode sources together with the use of phase screens to extend the memory of these systems.

Descriptors :   *Homing devices, *Optical detectors, *Matched filters, *Optical correlators, Image processing, Information processing, Fourier transformation, Optics, Signal to noise ratio

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE