Evaluation of landcover.imgThis item describes some characteristics of Clutter and the land cover
data. Also it goes in some detail regarding the implementation of Land
Cover in Radio Mobile. It enables the reader to determine what is best
for his situation.
Land cover data as it is made available by the University of Maryland is evaluated on:
- Accuracy compared to knowledge of the reference area by the author.
- Correlation to generally known
The reference area is in the middle of the Netherlands and cover 3
main cities: Apeldoorn, Deventer, and Zutphen. This area is known as
'Steden driehoek' or SDH.
This area holds 'Urban area' from which the centre of Deventer and
Zutphen hold 'Dense Urban Area's'. The land als holds forest and
agricultural grounds that can be populated by scattered bushes and
woods. This a typical river land as can be found in Holland.
To be able to determine accuracy of the Land Cover data, polygons
and lines are drawn in Radio Mobile around 3 main areas: City's
Apeldoorn and Deventer and a small forest. The pink line (highways A1
and A50) and the blue line (river IJssel) are drawn for orienteering
In this image the following layers are displayed (from top to bottom)
- Land Cover
- Open Street map
It can be clearly seen that 'Urban and Build-up' (light blue) does
correlate to the city of Apeldoorn and both other cities. However the
area that is described as 'Urban and Build-up' is much smaller than the
polygon that represents the city's. A reason for this might be that
residential areas who commonly are located on the edge of the urban
areas are identified as Rural areas.
Also it can be seen that the forest area (green polygon) is not
identified as 'Forest' but as 'Woodland'. This might be influenced by
the dominance of the surrounding 'Crop land'.
Land Cover does not have the level of detail that is required for
radio planning on a regional scale. However it can enhance the accuracy
of the RF predictions when used properly. See 'How to > Land Cover'