DOPPLER CENTER FREQUENCY CALCULATOR IN SYNTHETIC APERTURE RADAR

摘要

PURPOSE:To accurately calculate the Doppler center frequency of the image of synthetic aperture radar (SAR). CONSTITUTION:A means applying fast Fourier transform to the raw data of SAR in an azimuth direction to form a waveform transformed to the spectrum region in a range line and a means forming a reference waveform having one power max. value are contained. Further, a means forming the waveform as a result of taking the correlation of the waveform transformed to the spectrum region with the reference waveform having one power max. value and a means calculating the frequency having the max. power of the waveform obtained as the result of correlation as Doppler center frequency are contained.