Figure 9From: RFTraffic: a study of passive traffic awareness using emitted RF noise from the vehiclesClassification results of three different location scenarios using decision tree learning (regression trees). X and Y -axis are mean value and FFT amplitude of the RF-signals respectively, which are two features of the context classification process. (a) RF receiving at 900 MHz; (b) RF receiving at 2.4 GHz.Back to article page