Propagation Modelling

The Propagation menu determines the global default settings for the propagation environments.

As Visualyse allows you to look at compatibility between fundamentally different types of system, there are often times when one single set of models cannot be applied to all links in simulation. An example here is where terrestrial networks are sharing with space networks.

To allow maximum flexibility Visualyse classifies all links and allows you to select different propagation environments for each type. We have defined a five link types for you, but also allow you to add any number of custom types. For each Link type select the propagation models to be used and define the default parameters for those models.

Also, you can select different models to use when the Link is a victim and when it is an interferer. The reason for this is founded in the philosophy of ITU-R Recommendations. Propagation models used for link design and coverage are quite distinct from those used to calculate the level of an interfering signal.

Propagation options are defined from the Propagation menu. From this menu select a Link type from:

  • Terrestrial Fixed
  • Terrestrial Mobile
  • Space to Earth (= Earth to Space)
  • Space to Space
  • Broadcasting
  • Advanced

You can select models from the following list:

Visualyse Propagation Models
Visualyse Propagation Models

You can select any combination of models: Visualyse will warn you if there are any unusual combinations (e.g. multiple basic path loss) but will not stop you from using them.

More information about the scope and usage of each propagation model is given in the Technical Annex.