Fig. 7From: Detection of an unknown radio transmitter using an enhanced K-nearest neighbor algorithm based on virtual reference point and RSSD informationRSSD sample standard deviation comparisons. P(d0)=10 dB, α=1.8, σ=5.2 dB, d=2 m, t=50, positioning area (100 m ×100 m), and 4 APs ((17,25) m, (43,75) m, (67,75) m, (83,25) m)Back to article page