Accession Number:

AD0705753

Title:

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

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1970-03-31

Pagination or Media Count:

17.0

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.

Subject Categories:

  • Astronomy
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE