You can perform a sanity check on the suitability of a propagation model by clicking on <Tools/Test Propagation Models> in the main menu of SEAMCAT, by clicking on the icon ( ) of the toolbar or by pressing <CTRL+SHIFT+M>. With this feature, you may also evaluate the result while using a certain propagation model.
Figure 51: Access to testing propagation model
Choose the propagation model that you want to test. You are able to compare 2 or more propagation models with this interface. You can add or delete as many propagation models from the list on the left hand side as you want.
Figure 52 shows that the SEAMCAT resulting attenuation from the free space is 101.47 dB where the free space path loss is defined as:
(Eq. 16)
where d is given in km and f is given in MHz. This results in
L = (32.44 + 10 log(8) + 20 log(1000)) = 101.5 dB
Figure 52: Illustration on to check the propagation model results
If you choose one parameter as a distribution (for instance distance), then the button <generate sorted samples > is activated. Pressing it enables you to plot your results according to a sorted X-axis from min to max.
Figure 53: Activation of the “Generate sorted samples”
Finally click on <Generate samples> or <generate sorted samples> (depending which one is active) to view the results. If no results are displayed, check the Java console for any error messages
Figure 54 Example comparing 2 propagation loss using the “generate sorted samples”. You can display the vector in linear or logarithmic scale