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研究短时傅里叶变换和Gabor变换在机动飞行目标ISAR成像中的应用.通过对回波数据进行短时傅里叶变换或Gabor变换,得到不同时刻的高分辨瞬时多普勒谱,然后对观测数据段的不同时刻进行瞬时成像.仿真数据和外场实测数据验证了本方法的优越性.
The application of short-time Fourier transform and Gabor transform in ISAR imaging of maneuvering targets is studied.The high-resolution instantaneous Doppler spectra at different moments are obtained by short-time Fourier transform or Gabor transform of the echo data, Instantaneous imaging at different times of observation data segment.The simulation data and field measured data verify the superiority of this method.