Accession Number : ADD005542

Title :   Codable Optical Transponder.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Sauermann,Gerhard O

Report Date : 04 Jul 1978

Pagination or Media Count : 6

Abstract : A transponder illuminated by broadband optical radiation which is reflected back towards the illuminator by means of corner reflectors. In front of the corner reflectors are placed a plurality of narrow band filters which define the communication channels. The return signal will consist of the activation of a number of discrete channels corresponding to the number of filters used. The system is not restricted to the visible spectrum permitting infrared and ultraviolet radiation to be used to provide a covert communication system. (Author)

Descriptors :   *Patents, *Transponders, Optical equipment, Coding

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE