Accession Number : ADD011880

Title :   Optical Radar Transceiver Control Apparatus.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Mongeon,R J ; Wayne,R J ; Henschke,R W

Report Date : 01 Aug 1985

Pagination or Media Count : 21

Abstract : The apparatus is part of an optical radar set and comprises a high powered C02 pulsed transmitter laser which is injection controlled to operate at a fixed frequency offset from a lower powered C02 local oscillator laser. A portion of the output of the local oscillator laser is applied to an acousto-optic Bragg cell, together with an RF signal equal to the desired intermediate frequency of the radar set. The upshifted first order output of the Bragg cell is injected into the transmitter laser for stabilization purposes. This results in a stable intermediate frequency for the optical radar set. (Author)

Descriptors :   *PATENT APPLICATIONS, *OPTICAL RADAR, *TRANSMITTERS, *RADAR EQUIPMENT, ACOUSTOOPTICS, BRAGG ANGLE, CELLS, OUTPUT, INTERMEDIATE FREQUENCIES, RADIOFREQUENCY, SIGNALS, LASERS, FREQUENCY SHIFT, LOCAL OSCILLATORS, INTERMEDIATE FREQUENCIES, STABILITY

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE