Calculate the Clutter loss of a propagating radio
wave according to ITU-R P.452-16 Eq (57).
- Parameters:
- h_g
Quantity Height over ground [m]
- zone
CLUTTER enum, optional Clutter category for terminal.
- freq
Quantity Frequency of radiation [GHz]
- Returns:
- A_h
Quantity Clutter correction to path attenuation [dB]