Final Report of BeJamDetect Project 
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a) Constant maximum amplitude of fast oscillations b) Lower-frequency behavior 
Figure 3-17: Continuous-wave of RFl-event on June 26 at 11:30:03 in time 
The time evolution of the input RF power of the central array element on that day is presented in 
Figure 3-18. Prior to the time of capturing the RFI snapshot at 11:30:03, no large increase of input 
RF power could be observed. At 10:58:51 the receiver was triggered and captured a signal 
containing multi-frequency pulsed RFI centered at 1559.4 and 1560.04 MHz, as on Figure 3-19a. 
However, the interference in the prior snapshot was very weak, at the border of the detection 
threshold (see Table 1) and no further recordings were triggered. The next RFl-induced recording 
was triggered at 12:23:34 MET (see Figure 3-19b), which was caused by the same type of RFI and 
with similar bandwidth (see Figure 3-19c) of the main RFl-signal. However, no further detections 
occurred. This can support the conclusion that the interference source was only shortly active. 
L1 band, Input power at central array element 
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200000 O4 :00:00 06:00:00 OB :00:00 10:00:00 RU 14:00:00 16:00:00 18:00:00 20:00:00 22:00:00 
Time of day Jun 26, 2021 
Figure 3-18: Time evolution of input RF power of top array element on June 26 at 11:30:03 
Fitle: Final Report 
Version: 1.0 
age: 24