Squint SAR Data Processing With Extended Wavenumber Domain Algorithm Combines Motion Compensation

Inhalt:
A key problem for airborne SAR is the accurate motion compensation. Conventional Wavenumber Domain Algorithm (CWD) is an ideal solution of SAR focusing problem as long as nominal straight flight track is given, especially in the case of high squint angles and long synthetic apertures, but it has certain limitation in processing airborne SAR data affected by motion error, so Extended Wavenumber Domain Algorithm (EWD) is presented. It is detailedly discussed that EWD combines two-step motion compensation processing squint SAR data affected by motion error (squint EWD algorithm) in the paper and simulation is given.