Multi-channel correcting method for ultra wide-band synthetic aperture radar

The invention provides a multi-channel correcting method for ultra wide-band synthetic aperture radar. The method is applied to a multi-channel ultra wide-band synthetic aperture radar/ ground moving target indication (UWB SAR/ GMTI) system under an hour wide-band width product linear frequency modulation signal system. The technical scheme disclosed by the invention comprises the following steps of: 1, constructing a matched filter system function by using a spectrum correcting technology; 2, correcting an ideal receiving channel to acquire a reference channel; 3, constructing a channel equalizer for each receiving channel; and 4, completing inconsistency correction of the channels. According to the multi-channel correcting method disclosed by the invention, by combining the spectrum correcting technology and inserting the channel equalizer into each receiving channel, frequency property mismatch is corrected, inconsistency correction of the channels is completed, and the pulse compression performance of hour wide-band width product linear frequency modulation signals is effectively improved.