Stationary signal i.e. synthetic aperture radar video signal, extrapolating method for remote or Doppler high resolution analysis of signal, involves performing spectral decomposition of sub-signals and concatenation of spectrums

摘要

The method involves decomposing a stationary signal (37) i.e. synthetic aperture radar video signal, into M sub-signals (311) such that the sub-signals have different spectrums (314) and concatenation of the spectrums reconstitutes a signal spectrum. An analytic identification model is defined to identify M sequences of samples corresponding to the sub-signals and to extrapolate the sequences. Spectral decomposition of sub-signals (313) corresponding to the extrapolated sequences is performed. Concatenation of the spectrums obtained from the decomposition of the signal (37) is performed.