Final Report of BeJamDetect Project 
Z 
You 
From the temporal distributions of the detections it is possible to assume that the ship was mostly 
oositioned during these months in locations more susceptible for the occurrence of interference, 
oorts and other locations for mooring, from the experience of the first measurement campaign and 
its results (see 3.1.3 and [10)]). In the case of the detections in L1, they occurred mostly in August 
and October, with especial concern for the latter, given the elevated amount of detections of strong 
RFI-signals (see the purple bar on Figure 5-9). 
As to the detections in L5, they had occurred more during the month of September. From the first 
measurement campaign in 2021 (see 3.1.4 and [11]), the results from Demonstrator 1 were clear 
in the correlation between the time of detections of significant RFl-signals (above the weak 
threshold) and the position of the DENEB ship during these events. The relevant observation was 
the proximity of the ship to areas with DME/TACAN stations in areas nearby, one of the most 
frequent sources of interference in the L5 band. 
The geographical distribution of the most significant RFI events is also insightful to establish 
correlations between the interference occurrences, their frequency and where the ship was, 
allowing to assess the likely causes of the interference signals. It is also necessary for further 
assessment of the risks of such interference in case the ship is In scenarios of maneuvering or in 
navigating In open sea. 
‚egend 
MIME/TACAN statons 
1 band RFI 
15 band REF! 
ww, 
Figure 5-11 - Geographical distribution of strong RFI events from July to November 2023 
The geographical distribution follows the monthly distribution of the interferences in both 
frequency of relevant events occurrence and their type of interference together with the impact 
they caused on the receiver. For example, most of three of RFI events in L1 in October (on the 21%, 
Nitle: Final Report 
Version: 1.0 
age: 82