APPRAISAL OF THE POSSIBILITY OF OPERATION OF AN AZIMUTH-MOUNTED OPTICAL TELESCOPE WITH AN ELECTRONIC DIGITAL CONTROL SYSTEM,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
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.
- Optical Detection and Detectors