Controller-Only False Confirmation in Passive RF UAV Link Detection
SDR study finds counter-UAV RF detectors falsely confirm 50% of controller-only UAV scans, dropping to 5% under constrained training at accuracy cost.
Researchers used dual-band USRP B210 SDRs scanning eight 2.4 GHz and twelve 5.8 GHz windows across three commercial UAVs (DJI Phantom 3 4K, Hubsan H501S, DJI Mavic Mini). An energy-based detector achieved 0.992 balanced accuracy distinguishing linked UAVs from ambient noise yet false-confirmed 30 of 60 controller-only scans (FCRctrl = 0.500). Training with controller-only scans under an explicit FCR constraint reduced false confirmations from 0.350 to 0.050, but confirm-linked TPR fell from 0.900 to 0.400 and 42.1% of scans were deferred. The authors argue controller-only false confirmation must be reported separately from linked-versus-background accuracy.
- Energy detector false-confirmed 50% of controller-only scans despite 0.992 linked accuracy
- FCR-constrained training cut false confirmations from 0.350 to 0.050; TPR dropped to 0.400
- Hardware-in-loop scan reduced wall-clock time from 82.9 s to 28.9 s
From the original article
1 min read at arxiv.orgPassive radio frequency (RF) sensing is widely used for counter-unmanned-aerial-vehicle (counter-UAV) detection. Existing studies commonly report high accuracy against background RF or WiFi/Bluetooth interference, but rarely isolate controller-only operation without a linked aircraft.
By Rajendra Upadhyay · arxiv.org
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