Calculate Earth magnetic field and secular variation using International Geomagnetic Reference Field
Aerospace Blockset / Environment / Gravity
The International Geomagnetic Reference Field block calculates the Earth magnetic field and secular variation using the selected International Geomagnetic Reference Field generation. It calculates the Earth magnetic field and secular variation at a position and time using the selected International Geomagnetic Reference Field generation.
This block is valid between the heights of -1000 m and 5.6 Earth radii (35,717,567.2 m).
This block is valid for these year ranges:
IGRF-13 model — 1900 and 2025
IGRF-12 model — 1900 and 2020
IGRF-11 model — 1900 and 2015
If the decimal year is outside the valid range for a generation, the International Geomagnetic Reference Field block linearly extrapolates the magnetic field to the out-of-range decimal year.
For additional limitations, see :
The
International Geomagnetic Reference Field: A "Health" Warning