Multichannel Classifier for Recognizing Acoustic Impacts Recorded with a phi-OTDR. - Ivan Alekseevich Barantsov; Alexey Borisovich Pnev; Kirill Igorevich Koshelev; Egor Olegovich Garin; Nickolai Olegovich Pozhar; Roman Igorevich Khan (Sensors, 2023)