NIU Jie, LIU Yong-xiang, QIN Yu-liang, et al. A New Method of Radar Micro-motion Feature Extraction of Cone TargetBased on Empirical Mode Decomposition[J]. Acta Electronica Sinica, 2011, 39(7): 1712-1715.
NIU Jie, LIU Yong-xiang, QIN Yu-liang, et al. A New Method of Radar Micro-motion Feature Extraction of Cone TargetBased on Empirical Mode Decomposition[J]. Acta Electronica Sinica, 2011, 39(7): 1712-1715.DOI:
the modulating function of a precession target on the radar is analyzed.Then
the decomposition method of multi-component sinusoidal frequency modulated signal based on empirical mode decomposition (EMD) is studied.The instantaneous frequency of each intrinsic mode function is gained by using Short Time Fourier Transform (STFT).The precession features of precession period
precession angle
micro-motion range ratio of different scatters and geometry feature of aspect ratio are extracted.Finally
the results of feature extraction by utilizing the darkroom measurement are shown in figures