Propagation Paths

ProMan offers the possibility to visualize propagation paths determined during wave propagation prediction.

Propagation paths can be shown in 2D and in 3D view. There are several options to select the propagation paths to be displayed:
Display propagation paths on mouse move
The 2D view showing the propagation paths is updated directly while moving the mouse cursor within the result data. This option is available by clicking Display > Propagation Paths > Show all Paths for Pixel on Mouse Move or clicking the icon. Clicking the left mouse button, the propagation paths for the pixel at the current mouse position is fixed.
Display propagation paths on mouse click
This options offers the possibility to show all propagation paths of one or more result pixels after selecting the corresponding locations with the mouse. In this mode the display is not updated while moving the mouse cursor. To select this option, click Display > Propagation Paths > Show all Paths for Pixel on Mouse Click.
Show only selected paths for a pixel
In this mode an individual selection of rays contributing to a selected pixel can be displayed. Click Display > Propagation Paths > Show Paths for Pixel individually or click the icon. You have to specify the pixel to be evaluated. Afterwards, the Propagation Paths dialog opens where all rays contributing to the selected pixel are listed. In case the Update display only after mouse click check box is selected, the ray information listed on the dialog can be updated by clicking on another pixel. Otherwise the display is updated automatically while moving the mouse cursor.

Figure 1. The Propagation Paths dialog.

The rays in the list are initially sorted according to decreasing signal level, but the sorting sequence can be changed by clicking on the column headers. The rays to be displayed and further evaluated can be selected by selecting the corresponding check box in the index column. By clicking All or None, all paths of the current pixel can be selected or deselected. The Filter button makes it possible to select paths in a specified signal level range or to select a fixed number of paths depending on the sorting sequence.

Figure 2. The Selection of Paths dialog.

Further information about the selected paths (for example, the coordinates of the interaction points) can be obtained by clicking Info.

Figure 3. The Propagation Paths dialog.

To erase all rays drawn on the display, select Display > Propagation Paths > Delete all Paths on Display or click the icon.

Additionally it is also possible to highlight the interactions occurring along the propagation paths with balls. This option can be enabled or disabled by clicking Settings > Local Settings and clicking the Layout tab.

Note: Propagation paths can be analyzed only if the simulation was calculated with a ray-optical propagation model and the additional ray data output was enabled. While loading the result file, you will be asked to load additionally available data. This question has to be answered with yes to do analysis of the radio channel.


Ray data evaluation in urban environment:

Figure 4. Example of ray data in an urban environment.

Figure 5. Example of a propagation paths inside motorway tunnel.

Figure 6. Propagation paths in an indoor environment. Interactions occurring along the paths are indicated with blue balls.