NTRS - NASA Technical Reports Server

Back to Results
ATS-6 - UCLA fluxgate magnetometerA summary of the design of the University of California at Los Angeles' fluxgate magnetometer is presented. Instrument noise in the bandwidth 0.001 to 1.0 Hz is of order 85 m gamma. The DC field of the spacecraft transverse to the earth-pointing axis is 1.0 + or - 21 gamma in the X direction and -2.4 + or - 1.3 gamma in the Y direction. The spacecraft field parallel to this axis is less than 5 gamma. The small spacecraft field has made possible studies of the macroscopic field not previously possible at synchronous orbit. At the 96 W longitude of Applications Technology Satellite-6 (ATS-6), the earth's field is typically inclined 30 deg to the dipole axis at local noon. Most perturbations of the field are due to substorms. These consist of a rotation in the meridian to a more radial field followed by a subsequent rotation back. The rotation back is normally accompanied by transient variations in the azimuthal field. The exact timing of these perturbations is a function of satellite location and the details of substorm development.
Document ID
Document Type
Reprint (Version printed in journal)
Mcpherron, R. L. (California Univ. Los Angeles, CA, United States)
Coleman, P. J., Jr. (California Univ. Los Angeles, CA, United States)
Snare, R. C. (California, University Los Angeles, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1975
Publication Information
Publication: IEEE Transactions on Aerospace and Electronic Systems
Volume: AES-11
Subject Category
Funding Number(s)
Distribution Limits