eff_earth_radius_factor_median

pycraf.pathprof.eff_earth_radius_factor_median(lon, lat)

Calculate median effective Earth radius factor, k_50, according to ITU-R P.452-16 Eq (5).

Parameters:

lon, latQuantity

Geographic longitude and latitude of path center [deg]

Returns:

k50Quantity

Median effective Earth radius factor [dimless]

Notes

• Uses delta_N, which is derived from digitized maps (shipped with P.452) by bilinear interpolation; see also deltaN_N0_from_map.