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Processing of DMSP magnetic data and its use in geomagnetic field modelingThe DMSP F-7 satellite is an operational Air Force meteorological satellite which carried a magnetometer for geophysical measurements. The magnetometer was located within the body of the spacecraft in the presence of large spacecraft fields. In addition to stray magnetic fields, the data have inherent position and time inaccuracies. Algorithms were developed to identify and remove time varying magnetic field noise from the data. Techniques developed for Magsat were then modified and used to attempt determination of the spacecraft fields, of any rotation between the magnetometer axes and the spacecraft axes, and of any scale changes within the magnetometer itself. The corrected data were then used to attempt to model the geomagnetic field. This was done in combination with data from Magsat, from the standard magnetic observatories, from aeromagnetic and other survey data, and from DE-2 spacecraft field data. Future DMSP missions can be upgraded in terms of geomagnetic measurements by upgrading the time and position information furnished with the data, placing the magnetometer at the end of the boom, upgrading the attitude determination at the magnetometer, and increasing the accuracy of the magnetometer.
Document ID
19900002799
Document Type
Technical Memorandum (TM)
Authors
Ridgway, J. R. (Science Applications Research Lanham, MD., United States)
Sabaka, T. J. (Science Applications Research Lanham, MD., United States)
Chinn, D. (Science Applications Research Lanham, MD., United States)
Langel, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1989
Subject Category
GEOPHYSICS
Report/Patent Number
REPT-90B00020
GL-TR-89-0313
NASA-TM-100750
AD-A216440
SR-1
NAS 1.15:100750
Funding Number(s)
CONTRACT_GRANT: NAS5-20440
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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