Analysis of Micro-Doppler Effect and Feature Extraction of Target in Frequency-Stepped Chirp Signal Radar (1.Telecommunication Engineering Institute,Air Force Engineering University,Xi’an,Shaanxi 710077,China; 2.Key Laboratory of Wave Scattering and Remote Sensing Information ,Fudan University, Shanghai 200433,China;3.Science Institute,Air Force Engineering University,Xi’an,Shaanxi 710051,China)
LUO Ying, ZHANG Qun, BAI You-qing, et al. Analysis of Micro-Doppler Effect and Feature Extraction of Target in Frequency-Stepped Chirp Signal Radar (1.Telecommunication Engineering Institute,Air Force Engineering University,Xi’an,Shaanxi 710077,China; 2.Key Laboratory of Wave Scattering and Remote Sensing Information ,Fudan University, Shanghai 200433,China;3.Science Institute,Air Force Engineering University,Xi’an,Shaanxi 710051,China)[J]. Acta Electronica Sinica, 2009, 37(12): 2741-2746.
LUO Ying, ZHANG Qun, BAI You-qing, et al. Analysis of Micro-Doppler Effect and Feature Extraction of Target in Frequency-Stepped Chirp Signal Radar (1.Telecommunication Engineering Institute,Air Force Engineering University,Xi’an,Shaanxi 710077,China; 2.Key Laboratory of Wave Scattering and Remote Sensing Information ,Fudan University, Shanghai 200433,China;3.Science Institute,Air Force Engineering University,Xi’an,Shaanxi 710051,China)[J]. Acta Electronica Sinica, 2009, 37(12): 2741-2746.DOI:
The theory of the micro-Doppler (m-D) effect in frequency-stepped chirp signal is studied
and the causations of the range profile’s migration and wrapping are analyzed.The m-D effects induced by rotation and vibration are discussed in detail and the analytical expressions of the m-D signatures in the range-slow time plane are deduced.The algorithm for extraction of m-D signatures is proposed which is based on the Hough transform and time-frequency analysis.The implementations of the algorithm under condition of different rotating/vibrating frequencies and radii are discussed.Simulations are given to prove the validity of the theoretical analyses and the proposed m-D extraction method.