Radio signal detection and localisation for uncovering unauthorised signals in an examination environment
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Typ
Examensarbete på kandidatnivå
Program
Publicerad
2021
Författare
Adler, Marcus
Lundin, Otto
Nguyen, Lam
Alddin Taki, Nour
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Examination is a fundamental part of education, both for students and institutions.
Cheating on exams is something educational institutions are trying to reduce. One
form of cheating is the use of a mobile phone to live-stream the exam to pass the
test. The goal of this project is to explore the possibility to detect unauthorised
communication and locate the signal source. This is done by constructing a system consisting of three Software-defined radios, ADALM-PLUTO, as anchors. A
host computer then utilises the signal strength of incoming signals to estimate the
distance to its source, and eventually locate the source using a multilateration algorithm. The combined system resulted in the detection of wireless activity on the
2.4 GHz Wi-Fi band, and it could successfully locate the signal source. However,
the localisation could not consistently be repeated. We believe that through further
development of the system, there are enormous potential benefits for users, that
many interested parties can take advantage of.
Beskrivning
Ämne/nyckelord
Cheating , Anti-cheat , Cheat-detection , Radio signal detection , Multilateration , SDR , ADALM-PLUTO , Signal localisation