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Magnetic field satellite /MAGSAT/ spacecraft vector magnetometer calibrationThe low-flying MAGSAT spacecraft, launched October 30, 1979, included a Vector Magnetometer to accurately map the magnitude and direction of the magnetic field of the earth. Calibration of the magnetometer included arc-second precision determination of the relative orientations of the three sensor axes in a coordinate system defined by optical references. This determination began with laboratory measurements of the relative alignments of optical components mounted with the magnetometer. The actual calibration procedure then consisted basically of accurate and repeatable positioning of the Vector Magnetometer within a unique magnetic test facility which nulls the earth's magnetic field, then generates magnetic fields of various orientations and strengths. Analysis of the magnetometer sensor outputs together with the position and alignment data then gave the axes orientations. We used precision theodolites and methods related to surveying techniques to achieve the accurate positioning and optical component alignment measurements. The final calibration accuracy exceeded results previously achieved in the facility.
Document ID
19810055193
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hinkal, S. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
Spacecraft Instrumentation
Meeting Information
Meeting: Seminar on Optical alignment
Location: San Diego, CA
Start Date: July 29, 1980
End Date: July 31, 1980
Accession Number
81A39597
Distribution Limits
Public
Copyright
Other

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