A17.7.2.1 Input parameters

Figure 472: SEAMCAT Interface to the ITU-R P. 1546-4 propagation model

Table 87: ITU-R Recommendation P.1546-4 propagation model

Description	Symbol	Type	Unit	Comments
Variation				Variation in path loss
General environment				Environment of the propagation: urban, rural, suburban, dense urban
System				Mobile, broadcasting digital and broadcasting analogue
Time Percentage (min)				Minimum time variability from which the field strength values are exceeded
Time percentage (max)				Maximum time variability from which the field strength values are exceeded
use user specified local clutter height				User selectable clutter height value which overwrite any predefined value when selected
use user specified standard deviation				User selectable standard deviation value which overwrite any predefined value when selected
Area of location variability				500x500 m, < 2km radius, < 50 km radius
Terminal designations				When selected the algorithm will consider the option a), b) and c) of ITU-R. 1546-4 Annex 5 §1.1. By default it is selected.

This propagation model is fully described in Recommendation ITU-R P.1546-4. Only the land path is implemented. The sea path and the mixed sea/land path are not implemented. The ranges of application are the same as for the P1546-1.