Study on ISAR Imaging of Stepped-Frequency Chirp Signal

摘要

The application of the stepped-frequency Chirp signal on the wideband phased-array radar was analyzed in this paper.The window function was used to design the radar key parameters to minimize the ghost peak and the sampling loss.Then a velocity compensation method was presented to solve the Doppler Effect.Then the effects of the aperture fill time on the antenna direction pattern were also analyzed and a grouping phase matching rule was given.At last was the imaging result of the real data,which shows the validly of the proposed methods.