Unmanned Aerial Vehicle Detection and Recognition Method Based on Multi-dimensional Signal Feature

Nowadays, Unmanned Aerial Vehicles (UAVs) are widely used in military and civilian fields. While UAVs bring convenience, they also bring huge security risks. The detection and identification technology for UAVs has gradually become a research hotspot. The traditional UAV detection method mainly detects UAVs by obtaining radar echoes, UAV sound signals and photoelectric signals. However, such methods are often susceptible to environmental influences and have certain limitations, and cannot accurately locate and identify UAVs. A UAV identification method based on multi-dimensional signal features is proposed in this paper. Firstly, UAV signals from the received wireless signals through the adaptive triangular threshold method are detected and screened, and at the same time the Channel Status Information (CSI) of the acquired wireless signals is analyzed. Then, the Orthogonal Matching Pursuit (OMP) algorithm is used for parameter estimation to obtain the position information of the UAV to locate the UAV. Finally, the box dimension and Radial Integral Bispectrum (RIB) in UAV signals are extracted to classify and identify UAVs. Through experiments, the method's three-dimensional positioning accuracy for UAVs is less than 1 m, and the classification and recognition accuracy for UAVs can reach up to 100%. © 2024 Science Press. All rights reserved.