A Spectrum Recognition Method for Birds and Drones Using Residual Attention Networks

• Published in: 2024 9th International Conference on Intelligent Computing and Signal Processing (ICSP) pp. 728 - 732
• Main Authors: Chen, Jinfan, Mo, Junxian, Zheng, Zixiang, Xie, Hanfeng, Zhang, Yue
• Format: Conference Proceeding
• Language: English
• Published: IEEE 19.04.2024
• Subjects: Birds; birds and drones; Doppler effect; Doppler radar; Doppler spectrum; Drones; Radar; Radar cross-sections; residual attention network; Residual neural networks; Safety; Signal processing; target classification; Vectors
• DOI: 10.1109/ICSP62122.2024.10743946

The classification of birds and drones has become a hot topic in recent years. Drones have been rapidly abused due to safety issues, and birds frequently threaten aircraft take-off and landing. But birds and drones share lower radar cross-section (RCS), speed, and altitude, making it difficult for radar to distinguish. This article uses residual attention networks to classify radar multi frame spectral sequence data of drones and birds. Firstly, Fourier transform (FFT) is used to transform the radar target to obtain the Doppler spectrum vector of the target. A multi frame Doppler dataset of birds is constructed by cutting. Due to the scarcity of drone radar data, a sliding window method is used to construct a multi frame Doppler dataset of drones. Then, due to the attention module's ability to obtain global and local connections, which conform to the characteristics of radar targets in the Doppler spectrum, we combined it with residual neural networks to solve the classification problem of birds and drones using residual attention networks. The experiment shows that the recognition rate of this method on Doppler datasets can reach over 96%.