3D-TF-Spectrum-Based Rotational Parameter Extraction of Extended Target with Vortex Electromagnetic Wave Radar

Vortex electromagnetic wave radar echoes simultaneously unite the radial and angular information of the target, containing more micro-motion information than traditional radar. By jointly processing the two-dimensional information of radial Doppler and rotational Doppler, more abundant information than traditional plane wave detection can be obtained, providing effective support for accurate target identification. However, most existing rotational parameter extraction methods focus on separating and removing radial Doppler to study the rotational Doppler effect. To address this issue, this paper proposes a method based on time-frequency (TF) analysis and genetic algorithm (GA) optimization to extract micro-motion parameters of rotating extended-target with vortex electromagnetic wave radar.