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Comparing Geomagnetic Field Models with a Sensitivity Matrix

version 1.0.1 (2.02 KB) by Neesha Regmi Schnepf
Compare how similar two geomagnetic field models are by producing a sensitivity matrix of their Gauss coefficients.

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Updated 25 Feb 2020

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Planetary geomagnetic field models are often written in terms of Gauss coefficients (eg., see here for more information: https://www.ngdc.noaa.gov/geomag/WMM/data/WMMReports/WMM2015_Report.pdf).

This code compares how similar two geomagnetic field models are by producing a sensitivity matrix of their Gauss coefficients. Thus, this function can be used to compare a geomagnetic model you've made to a standard reference field model.

For Earth, standard reference models include:
> the World Magnetic Model (https://www.ngdc.noaa.gov/geomag/WMM/soft.shtml)
> the International Geomagnetic Reference Field (https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html)

There are geomagnetic field models for other planets that also use Gauss coefficients within a spherical harmonic expansion to describe the field. This function will also work for those models.

Please cite using the reference below whenever you use this code to obtain results for published work.

Cite As

Neesha Regmi Schnepf (2020). Comparing Geomagnetic Field Models with a Sensitivity Matrix (https://www.mathworks.com/matlabcentral/fileexchange/74357-comparing-geomagnetic-field-models-with-a-sensitivity-matrix), MATLAB Central File Exchange. Retrieved .

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Updates

1.0.1

Updated WMM report link and citation information.

MATLAB Release Compatibility
Created with R2019b
Compatible with any release
Platform Compatibility
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