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Figure 472: SEAMCAT Interface to the P1546ITU-R P. 1546-4 propagation modelAnchor F472 F472
Table 87: ITU-R Recommendation P.1546-4 propagation modelAnchor T087 T087
Description | Symbol | Type | Unit | Comments |
Variation |
|
|
| Variation in path loss takes into account the uncertainty of building design, furniture, room size, etc. |
General environment |
|
|
| Environment of the propagation: urban, rural, suburban, dense urban |
System |
|
|
| Mobile, broadcasting digital and braodcasting broadcasting analogue |
Time Percentage (min) |
|
|
| Minimum time variability from which the field strengths value strength values are exceeded |
Time percentage (max) |
|
|
| Maximum time variability from which the field strengths value are 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.