Development of a Shuttle Infrared Telescope Facility /SIRTF/ fine guidance sensor

Details Development of a Shuttle Infrared Telescope Facility /SIRTF/ fine guidance sensor Development of a Shuttle Infrared Telescope Facility /SIRTF/ fine guidance sensor

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981spie..265..203s&link_type=abstract

In: Shuttle pointing of electro-optical experiments; Proceedings of the Seminar, Los Angeles, Calif., February 10-13, 1981. (A81

Computer Science

Performance

Guidance Sensors, Instrument Orientation, Pointing Control Systems, Space Infrared Telescope Facility, Space Shuttle Payloads, Star Trackers, Three Axis Stabilization, Algorithms, Automatic Control, Charge Coupled Devices, Microcomputers

Scientific paper

Fine guidance technology development for the Shuttle Infrared Telescope Facility (SIRTF) centers upon the use of a single multiple-star-tracking sensor to provide the position information necessary to produce three-axis attitude control signals for precision payload pointing. The effort described in this paper is concerned with the development of a fine guidance sensor that employs a high-density charge-coupled imaging device for producing position information signals by using star fields. Multiple star position information produces three-axis position error signals that are used to update inertial reference gyros. The sensor employs advanced position interpolation algorithms to enhance field-of-view resolution and to correct for optical aberrations inherent in spatially chopped star images resulting from the telescope's movable secondary mirror. Operation of the sensor is under the control of a high-performance microcomputer that provides both autonomy and flexibility in a guidance application.

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