Flight Calibration of the Van Allen Probe Magnetometers

Bernard J Vasquez; Charles W Smith; Kristoff W Paulson; C. A Kletzing

doi:10.3847/1538-4365/aba62e

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Flight Calibration of the Van Allen Probe Magnetometers

Journal article

Open access

Peer reviewed

Flight Calibration of the Van Allen Probe Magnetometers

Bernard J Vasquez, Charles W Smith, Kristoff W Paulson and C. A Kletzing

The Astrophysical journal. Supplement series, Vol.250(1), p.4

09/01/2020

DOI: 10.3847/1538-4365/aba62e

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Abstract

The twin Van Allen Probes each carry a triaxial fluxgate magnetometer. Their orbits transverse a large of range of magnetic intensity. A procedure is described that calibrates the magnetometer in the spinning-spacecraft frame and in the presence of a persistent gradient of the magnetic field. This is done by extending a model based on a constant background magnetic field to a model with a changing magnetic field during intervals used for calibration. Model parameters derived from short intervals are obtained by direct calculation, and uncertainties are propagated throughout the analysis. A daily ensemble analysis of interval-derived parameters and uncertainties is then made to correct for sensor bias and misalignment. The whole analysis is iterated to convergence in a few steps based on the estimated uncertainties associated with the model parameters.

Van Allen radiation belt

Details

Title: Subtitle: Flight Calibration of the Van Allen Probe Magnetometers
Creators: Bernard J Vasquez - University of New Hampshire Institute for the Study of Earth, Oceans, and Space and the Department of Physics, Durham, NH, , USA
Charles W Smith - University of New Hampshire Institute for the Study of Earth, Oceans, and Space and the Department of Physics, Durham, NH, , USA
Kristoff W Paulson - University of New Hampshire Institute for the Study of Earth, Oceans, and Space and the Department of Physics, Durham, NH, , USA
C. A Kletzing - University of Iowa , Iowa City, IA, USA
Resource Type: Journal article
Publication Details: The Astrophysical journal. Supplement series, Vol.250(1), p.4
DOI: 10.3847/1538-4365/aba62e
ISSN: 0067-0049
eISSN: 1538-4365
Publisher: The American Astronomical Society
Number of pages: 16
Grant note: 1000556126 / University of Iowa subcontract
Alternative title: Flight Calibration of the Van Allen Probe Magnetometers
Language: English
Date published: 09/01/2020
Academic Unit: Physics and Astronomy
Record Identifier: 9984428677302771

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