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Fiber-optic three axis magnetometer prototype developmentThe goal of this research program was to develop a high sensitivity, fiber optic, interferometric, three-axis magnetometer for interplanetary spacecraft applications. Dynamics Technology, Inc. (DTI) has successfully integrated a low noise, high bandwidth interferometer with high sensitivity metallic glass transducers. Also, DTI has developed sophisticated signal processing electronics and complete data acquisition, filtering, and display software. The sensor was packaged in a compact, low power and weight unit which facilitates deployment. The magnetic field sensor had subgamma sensitivity and a dynamic range of 10(exp 5) gamma in a 10 Hz bandwidth. Furthermore, the vector instrument exhibited the lowest noise level when only one axis was in operation. A system noise level of 1 gamma rms was observed in a 1 Hz bandwidth. However, with the other two channels operating, the noise level increased by about one order of magnitude. Higher system noise was attributed to cross-channel interference among the dither fields.
Document ID
19930006522
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Wang, Thomas D.
(Dynamics Technology, Inc. Torrance, CA, United States)
Mccomb, David G.
(Dynamics Technology, Inc. Torrance, CA, United States)
Kingston, Bradley R.
(Dynamics Technology, Inc. Torrance, CA, United States)
Dube, C. Michael
(Dynamics Technology, Inc. Torrance, CA, United States)
Poehls, Kenneth A.
(Dynamics Technology, Inc. Torrance, CA, United States)
Wanser, Keith
(Dynamics Technology, Inc. Torrance, CA, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1989
Subject Category
Optics
Report/Patent Number
NASA-CR-191882
DT-8619-89007
NAS 1.26:191882
Accession Number
93N15711
Funding Number(s)
CONTRACT_GRANT: NAS7-1001
CONTRACT_GRANT: SBIR-08.10-5433
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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