Final Report of BeJamDetect Project 
3.1.4. Summary for entire RFI situation, L5/E5a band 
The increase of the received RF power of the top antenna element is depicted on Figure 3-29. From 
June 1 until November 11 there were 418 interference occurrences that raised the input power 
above 1 dB in the L1 band, and 528 in the L5 band (see Table 2). This is indicative of how much 
more often the L5 band is affected by interference than the L1 band, although the system was not 
orogrammed to record snapshots triggered by detection in L5. Every RFI detection in L5 was 
recorded only when interference was also detected in the L1 band, or when it occurred in the one- 
hour interval of nominal situation of the L1 band. In other words, all L5 interference that may have 
occurred between the one-hour period of nominal situation were not recorded. 
L5 band, Input power at central array element 
—>— APin at Ant#7 (dB) 
—=—=:1<5 waak RFI threshold 
= = *3dB medium RFI threshok 
—— 508 strong RFI threshakd 
= 
L 
Pe 
ZZ 
a 
00:00:00 00:00:00 a 00:00:00 00:00:00 
GPS time, t0 = 01-Jun-2021, 00:00:00 Jun 01, 2021-Nov 11, 202 
Figure 3-29: Increase of GALANT top antenna element input power in L5 band 
between June 1 and November 11, 2021 
Y)-DD- {X 
Table 2 - Number of RFI above the weak threshold from June 1 to November 11, 2021 
RFI power L1 band L5 band 
Neak 
Medium 
Strong 
TFA 
fa 
108 
409 
AU 
MC 
In the whole campaign, a total of 4204 interference occurrences on L5 was recorded, and it 
happened mostly at the beginning of the measurement campaign, specially the RFI above weak 
level, see the graphics on Figure 3-30. 
Fitle: Final Report 
Version: 1.0 
age: 33