High resolution spaceborne SAR implementation method based on multiple phase centers antenna

An implementation method of high resolution spaceborne synthetic aperture radar (SAR) based on multiple phase center (MFC) antenna was studied, especially to the tri-phase centers antenna, as it can effectively resolve the impact of resolution and swath extension. The echo signal model was proposed, and a method of processing the echo signal was discussed. By this method, the echo was transformed to the standard echo as usual one phase central antenna, which can be processed by traditional strip-mode imaging algorithm. The pulse recurrence frequency (PRF) departure s influence on imaging performance was studied and the false target's position and relative magnitude were given. The result of computer simulation proves the validity of the content.