Dr. Biswajit Biswal Profile

Dr. Biswajit Biswal

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Proceedings Article | 10 May 2019 Paper

Radio frequency classification toolbox for drone detection

Abdulkabir Bello, Biswajit Biswal, Sachin Shetty, Charles Kamhoua, Kimberly Gold

Proceedings Volume 11006, 110061Y (2019) https://doi.org/10.1117/12.2514759

KEYWORDS: Signal detection, Modulation, Signal to noise ratio, Orthogonal frequency division multiplexing, Receivers, Feature extraction, Signal processing, Library classification systems, Machine learning, Sensors

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There is a need for Radio Frequency Signal Classification (RF-Class) toolbox which can monitor, detect, and classify wireless signals. Rapid developments in the unmanned aerial systems (UAS) have made its usage in a variety of offensive as well as defensive applications especially in military, high priority and sensitive government sites. The ability to accurately classify over-the-air radio signals will provide insights into spectrum utilization, device fingerprinting and protocol identification. These insights can help the Warfighter to constantly be informed about adversarys transmitters capabilities without their knowledge. Recently, few researches have proposed feature-based machine learning techniques to classify RF signals. However, these researches are mostly evaluated on simulated environments, less accurate, and failed to explore advance machine learning techniques. In this research, we proposed a feature-engineering based signal classification (RF-class) toolbox which implements RF signal detection, Cyclostationary Features Extraction and Feature engineering, Automatic Modulation Recognition to automatically recognize modulation as well as sub-modulation types of the received signal. To demonstrate the feasibility and accuracy of our approach, we have evaluated the performance on a real environment with an UAS (Drone DJI Phantom 4). Our initial experimental result showed that we were able to detect presence of drone signal successfully when power on and transmitting. And further experiments are under progress.

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