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https://gitee.com/mirrors_PX4/PX4-Autopilot.git
synced 2026-10-28 22:33:35 +08:00
Daniel Agar
9aa7991654
- updated table to 2 bytes (int16) per element and scaled the inclination/declination/strength tables to use most of the range without being too awkward - tables have been extended to include the full latitude range - expanded the API slightly to offer declination/inclination in both degrees/radians and the magnetic strength in Gauss and Tesla - generated some simple testing that verifies interpolation between points
55 lines
2.4 KiB
C
55 lines
2.4 KiB
C
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*
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* Copyright (c) 2014-2020 Estimation and Control Library (ECL). All rights reserved.
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/**
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* @file geo_mag_declination.h
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*
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* Calculation / lookup table for Earth's magnetic field declination, inclination and strength.
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* Data generated by https://www.ngdc.noaa.gov/geomag-web/#igrfgrid IGRF calculator on 22 Jan 2018
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*
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*/
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#pragma once
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// Return magnetic declination in degrees or radians
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float get_mag_declination_degrees(float lat, float lon);
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float get_mag_declination_radians(float lat, float lon);
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// Return magnetic field inclination in degrees or radians
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float get_mag_inclination_degrees(float lat, float lon);
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float get_mag_inclination_radians(float lat, float lon);
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// return magnetic field strength in Gauss or Tesla
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float get_mag_strength_gauss(float lat, float lon);
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float get_mag_strength_tesla(float lat, float lon);
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