Project Settings

The project settings for rural projects with vector databases are given.

Figure 1. The Database settings dialog.
Vector database
You can change the database file and its path.
Warning: If you change to a completely different database, your settings (for example, base station position) may not be valid any more. The database display is not updated after a change of the database, therefore you should save the project after a change of the database and open it again.
Material properties
The material properties of the walls are taken into account by most of the prediction models when the prediction is computed. If the individual properties are not defined in the database or if the user does not want to use the defined material properties, default values can be used by choosing the option Default values. In this case, all materials defined in the database will have the same electrical properties.

Figure 2. The Change default values for Material properties dialog.
Note: Parameters, which actually impact the wave propagation prediction, depend on the selected propagation model and further propagation parameters.

Ray optical propagation models, such as standard ray-tracing (SRT) and rural ray-tracing (RRT) use all material parameters listed in the dialog for Fresnel coefficients and GTD / UTD or the empirical transmission, reflection and diffraction model, respectively, depending on the computation mode of signal level. Semi-deterministic and empirical prediction models only use parameters for Fresnel coefficients or the values for the transmission loss, respectively, depending on the computation mode of signal level.

Subdivisions contained in the database can be considered or neglected by selecting or clearing the corresponding check box.
Multiple definitions of (identical) objects
Identical vector objects contained in the database can be neglected. This makes it possible to use converted building data where the outline of the walls has been modeled directly, as the double definitions of the walls (inner and outer part) can be combined to consider only one transmission for the wall.