Classification and Discrimination of Birds and Small Drones Using Radar Micro-Doppler Spectrogram Images

Autor: Ram M. Narayanan, Bryan Tsang, Ramesh Bharadwaj
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Signals, Vol 4, Iss 2, Pp 337-358 (2023)
Druh dokumentu: article
ISSN: 2624-6120
DOI: 10.3390/signals4020018
Popis: This paper investigates the use of micro-Doppler spectrogram signatures of flying targets, such as drones and birds, to aid in their remote classification. Using a custom-designed 10-GHz continuous wave (CW) radar system, measurements from different scenarios on a variety of targets were recorded to create datasets for image classification. Time/velocity spectrograms generated for micro-Doppler analysis of multiple drones and birds were used for target identification and movement classification using TensorFlow. Using support vector machines (SVMs), the results showed an accuracy of about 90% for drone size classification, about 96% for drone vs. bird classification, and about 85% for individual drone and bird distinction between five classes. Different characteristics of target detection were explored, including the landscape and behavior of the target.
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