Radar Field Analyser - RFA641 Edition Date: 28-Feb-18
The ASTERIX cat 21 was then converted into an S4 file, allowing it to be visualized and verified in the
Inventory tool. The details of the cat 21 can be verified in the Protocol Viewer tool and the Pd and Accuracy
can be evaluated using the Pd and Accuracy tool for ADSB.
Once the two datasets, scenario and detected ASTERIX are visualized in the Inventory tool, it becomes easy
to calculate Pd of detection, accuracy, etc. from this data. Obviously, the tests can be repeated several times,
to provide average values of detection probability.
Upon designing the RFA ADSB control tool, we used the RTCA DO-260 and DO-260A documents, which
describe the “Minimum Operational Performance Standards for ADS-B and TIS-B 1090 ES Extended
Squitter” as a reference.
In real life, ADS-B ground/airborne receivers have to cope with heavily polluted environments with FRUIT
replies, both SSR and Mode S, but also other signal types like DME. Although the possibility of generating
these garbling signals is integrated in the RES it was not possible to integrate them in the RFA641 as well,
since the RFA has641 only one target generation board.
IE-UM-00165-005 RFA641 User Manual.odt 85/110
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