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Proceedings Paper

A Three-Axis Angular Monitoring System For The Magnetic Field Satellite (MAGSAT) Mission
Author(s): P. Wardham Collyer; Frederick W. Schenkel
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Paper Abstract

An electro-optical attitude transfer system was developed to monitor the angular orientation of magnetometers deployed at the end of a 20-foot boom extending outboard from the Magsat spacecraft. One autocollimator monitors pitch and yaw attitude, cooperating with a plane mirror at the end of the boom; a second monitors roll (twist) from an offset look-angle, using one dihedral reflector at the boom end and a second on the spacecraft. RMS errors due to all causes including linearity, 0-forces, cross-coupling and translation are estimated to be 3.9 arc-seconds over ±180 arc-sec. excursion in pitch and yaw, and 5.3 to 7.5 arcseconds over ±300 arc-sec roll. Design and fabrication problems relative to the remote dihedral reflector proved to be the most challenging, and solutions to these problems will be described.

Paper Details

Date Published: 31 December 1980
PDF: 11 pages
Proc. SPIE 0251, Optical Alignment I, (31 December 1980); doi: 10.1117/12.959468
Show Author Affiliations
P. Wardham Collyer, Barnes Engineering Company (United States)
Frederick W. Schenkel, The Johns Hopkins University (United States)

Published in SPIE Proceedings Vol. 0251:
Optical Alignment I
Richard N. Shagam; William C. Sweatt, Editor(s)

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