Accession Number : AD0705753

Title :   APPRAISAL OF THE POSSIBILITY OF OPERATION OF AN AZIMUTH-MOUNTED OPTICAL TELESCOPE WITH AN ELECTRONIC DIGITAL CONTROL SYSTEM,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Neplokhov,E. M.

Report Date : 31 MAR 1970

Pagination or Media Count : 17

Abstract : The tracking of a celestial body can be achieved by the joint operation of three systems: (1) a control digital computer; (2) a photoelectric automatic correction; (3) a field rotation compensation. Astronomic, instrumental, and computer errors are analyzed for a system operating without the photoelectric automatic correction. It is found that the digital control system can ensure homing on (aiming at) a target and also tracking for a limited time; the maximum error of homing and tracking occurs at t equals 24 hrs and delta equals 43 degrees (near-zenith zone); homing and tracking errors and their rates of variation decrease as the zenith distance increases; an error accumulation due to digital control produces a blurring of the image; the tracking error builds up slowly which permits operation without the photoelectric automatic correction for a limited time.

Descriptors :   (*TRACKING TELESCOPES, CONTROL SYSTEMS), (*OPTICAL TRACKING, AUTOMATION), ERRORS, DIGITAL SYSTEMS, USSR

Subject Categories : Astronomy
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE