eff_earth_radius_factor_median¶
-
pycraf.pathprof.
eff_earth_radius_factor_median
(lon, lat)[source] [edit on github]¶ Calculate median effective Earth radius factor, k_50, according to ITU-R P.452-16 Eq (5).
- Parameters
- lon, lat
Quantity
Geographic longitude and latitude of path center [deg]
- lon, lat
- Returns
- k50
Quantity
Median effective Earth radius factor [dimless]
- k50
Notes
Uses delta_N, which is derived from digitized maps (shipped with P.452) by bilinear interpolation; see also
deltaN_N0_from_map
.