A Multi-Rotor Drone Micro-Motion Parameter Estimation Method Based on CVMD and SVD

It is of great significance to detect drones in airspace due the substantial increase and regrettable misuse consumer market. In this paper, we establish a micro-motion theoretical model drone analyze micro-Doppler signature rotor targets flicker mechanisms multi-rotor targets. Hence, for target recognition problem drones, parameter estimation method proposed. Firstly, signal frequency domain segmentation proposed based on complex variational mode decomposition (CVMD) separate high-frequency part domain. Secondly, after segmentation, time position singular value (SVD) Finally, by integrating CVMD SVD positioning, reconstruction scintillation at different speeds realized, parameters blades are successfully estimated. The simulation results show that has high accuracy estimating multi-rotor, which makes up shortage traditional target.