majiayu000 SatelliteToolboxGeomagneticField.jl
Earth's geomagnetic field computation. Repo: JuliaSpace/SatelliteToolboxGeomagneticField.jl
IGRF Model
# Angles in radians
B = igrf(date, r, λ, Ω; max_degree=13) # Geocentric (default)
B = igrf(date, h, λ, Ω, Val(:geodetic); max_degree=13) # Geodetic
# Angles in degrees (d suffix)
B = igrfd(date, r, λ_deg, Ω_deg; max_degree=13)
B = igrfd(date, h, λ_deg, Ω_deg, Val(:geodetic))
Simplified Dipole Model
B = geomagnetic_dipole_field(r_ecef, year) # r_ecef in meters, returns B in ECEF [nT]
Pre-allocated Legendre Buffers
B = igrf(date, r, λ, Ω; P=P_matrix, dP=dP_matrix)
Key Conventions
dateas decimal year (e.g.,2024.5), valid range: 1900-2035igrf: angles in radians.igrfd: angles in degrees- Altitude/distance in meters
- Output: geomagnetic field in nT in NED (North-East-Down) frame
- Position reference:
Val(:geocentric)(default) orVal(:geodetic) - IGRF v14, spherical harmonics up to degree 13