Accession Number : AD0854588

Title :   Digitized Optical Radar Collimation System Theory of Operation, Circuit Description, Operation and Maintenance Instructions,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Stedman, Robert J.

Report Date : DEC 1968

Pagination or Media Count : 228

Abstract : The digitized optical radar collimation system (DORCS) was designed and built by NWC to provide an effective method of boresighting a type AN/FPS-16 instrumentation radar on shipboard while at sea. The DORCS compares the radar mechanical and RF axes using a dual-lens optical system in conjunction with a digitized closed-circuit television tracker system, both of which are mounted on the antenna elevation axis. During target track, the radar provides positioning information to the mount servo system, while the TV system, which tracks the target concommitantly, provides radar lead or lag data. The digitized optical data are corrected for parallax and correlated with the digitized radar error data by the DORCS computer. In addition to the circuits built by NWC, the DORCS contains a TV camera, a dual-lens system, and an oscillograph recorder obtained from commercial sources. Their operation and maintenance are covered in manufacturers' handbooks. This report contains a description of the DORCS and the theory of its operation, together with alignment procedures and tabular and graphic maintenance data. (Author)

Descriptors :   *OPTICAL TRACKING), (*CLOSED CIRCUIT TELEVISION, (*MONOPULSE RADAR, ALIGNMENT), GUIDED MISSILE TRACKING SYSTEMS, THEORY, DIGITAL SYSTEMS, OPERATION, CORRECTIONS, BORESIGHTING, ALIGNMENT.

Subject Categories : Optical Detection and Detectors
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE