NASA NTRS · 19720048377
Roll angle detector.
Abstract
Description of a roll angle detector system under development that is designed to measure the relative roll angle of two independent bodies to a high degree of precision. The system involves the imaging of a very small aperture by an optical system on one body onto the surface of the other. A review of the underlying mathematical principle, is followed by an optical-mechanical and electrical description of the system and a listing of several important sources of measurement errors. The ultimate achievement of an accuracy of plus or minus 5 arc seconds is expected.
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Lowen, I., Hoehn, H., Appler, R.. 1971-01-01. Roll angle detector.. https://ntrs.nasa.gov/citations/19720048377
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