Absolute Heights

Calculate propagation in rural/suburban scenario with the site height set relative to sea level.

Model Type

The geometry is described by topography (elevation) and is shown in Figure 1. The Database tree in the Tree view enables you to view the topography (terrain elevation at every pixel). In this example, there is no land-usage (clutter) database. The prediction area (red rectangle) is smaller than the total available area and as a result, reduces computation time.
Tip: Click Project > Edit Project Parameter and click the Simulation tab to set the prediction area.

Figure 1. Topography (elevation).

Sites and Antennas

The model contains a site with one omnidirectional antenna. The antenna is placed at an absolute height of 273 m, which is the height above sea level, and operates at a frequency of 2 GHz. The transmitter power of the antenna is 10 W.
Tip: Click Project > Edit Project Parameter and click the Sites tab to view the antennas and sites.

Computational Method

The selected method is DPM. Contrary to several other methods for rural propagation, DPM is a 3D deterministic method. Propagation exponents were too reasonable values for such a typical terrain where some of the power is scattered by vegetation or other terrain features. Often these exponents are fine-tuned using calibration based on a few measurements for a given environment.
Tip: Click Project > Edit Project Parameter and click the Computation tab to set the Path Loss Exponents.


Propagation results show in every location the received power by a hypothetical omnidirectional receiving antenna at 1.5 m above ground. For example, Figure 2 shows the results for Site 1 Antenna 1.

Figure 2. Power results of Site 1 Antenna 1.

A line-of-sight analysis was performed and is shown in Figure 3.

Figure 3. LOS analysis for Site 1 Antenna 1.