Method and device of correcting synthetic aperture radar echo data

The present invention discloses a method of correcting synthetic aperture radar (SAR) echo data. The method comprises the steps of obtaining the missing data in the echo data to obtain the complete echo data; carrying out the range direction pulse compression on the complete echo data to obtain the data finishing the range direction pulse compression; reconstructing the data finishing the range direction pulse compression into the sampling data of uniform azimuth direction; calculating the product of the sampling data of uniform azimuth direction and a reference function, and carrying out the Stolt mapping on the obtained product to obtain a radar image. The present invention also discloses a device of correcting the SAR echo data.