Final Report of BeJamDetect Project 
Here Is an example of the GUI displays in the event of a strong interference: 
Alscer Pasinon am 7) 
AUG 
AT I 
A Bd 
Sky Plot 
Prewhitening An. 
+ 
User Range Accuracy 
Altitude 
ar 
C/No 
1 
Beamformizey Pl 
Figure 4-8: GUI displays in case of strong Jamming event (laboratory experiment) 
The indications of interference are: 
1 An area in red color is clearly visible in the prewhitening diagram, which marks an area 
from which a particularly strong interference signal is received. The darker the red color, 
the stronger the interference signal. In addition, the field in which the JNR (here: 29.3 dB) 
is indicated is highlighted in red. Two examples of the prewhitening plot for a weak 
interference signal (left, JNR: 2.5 dB) and a medium-strong interference signal (right, JNR 
5.6 dB) are shown below. 
Sky 
Prewhitening Pink 
Sky Plot 
Pa 
| 
Beamforminn Pler 
Bl 
—— —>——— 
Beaamforming Plot: 
In the event of a moderately strong interference signal, the background of the jJamming-to- 
noise power ratio JNR) display is shown in orange. 
2 
The C/NO values of satellites coming from the same direction as an interfering signal drop 
nNore significantly compared to the other signals. In the examples above, these are the 
Title: Final Report 
Version: 1.0 
age: 44