Final Report of BeJamDetect Project 
L5 band, Input power at central array element 
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UTC time, t0 = 16-0ct-2023. 00:00:00 Oct 16, 2023 
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Figure 5-19 - Input power on top antenna element on October 16 in L5 band 
It was an isolated event and caused the loss of tracking of some satellites and even caused 
degradation on the C/NO levels of most L1 signals coming from the same satellites, as shown on 
Figure 5-20. These impacts were caused by a very wideband pulse that covered the whole 50 MHz 
spectrum (and possibly more) with a waveform similar to a noise-like signal. 
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Figure 5-20 - GUI snapshot at the moment of very strong RFI in L5 on October 16 
Given its isolated occurrence in time and space (moored in the Unterwarnow cannal, see Figure 
5-21), and the waveform, the most probable cause was an electric surge or spark in the system 
that affected the antenna chains in this frequency. 
Fitle: Final Report 
Version: 1.0 
age: 90