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Azimuth Monitoring Experiment Status Report

Robert L. IliffRoger W. SandsTheodore E. Wirtanen

出版	Air Force Geophysics Laboratory, Air Force Systems Command, United States Air Force, 1982
URL	http://books.google.com.hk/books?id=x19HKWvd6pQC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

With the increase in precision of inertial guidance systems has come a parallel need for techniques to monitor and measure the stability of azimuth references. These azimuth references are used to transfer astronomic direction to inertial system test platforms, for rocket engine test tracks, and for precision test facilities construction, among other requirements. Vibration damping techniques, the peculiarities of differential expansion, refraction, defraction all emphasize that we are building on a living, moving earth, within the bottom layers of an ocean of air. Thus anything which can monitor and measure the stability of USAF's carefully surveyed azimuths will help in the progress toward precision. AFGL initiated the concept of monitoring the rotational and translational movements of directional references.