Abstract:

Due to the effect on clutter suppression, Doppler parameters estimation and target focus imaging, motion error  compensation is a key technology to bistatic synthetic aperture radarground moving target indication (SAR-GMTI). An  effective method of motion error analysis and compensation is presented based on the characters of spaceborneairborne  bistatic systems. According to the spaceborneairborne bistatic SAR-GMTI signal geometry, the influence of error on  the parameters of moving target is deduced, and the corresponding compensation factors are also proposed. Especially for  the cases when relief and squint cannot be ignored, an offset error compensation is analyzed and an effective  compensation is given. Finally, the simulation results show the effectiveness of the method.