High squint SAR processing using modified extended chirp scaling

This paper proposes a novel approach for high squint missile borne SAR raw data processing using a modified extended chirp scaling algorithm to accommodate the condition of high squint and short wave wavelength. Compared with the tradition synthesis aperture radar (SAR), the missile borne SAR has important characteristics including high flight speed non-straight movement with non-constant velocity and big squint angle, which forward a greater requirement for real time performance, precision of the motion compensation. According to the motion of the missile and target, the modified extended chirp scaling algorithm is designed and the simulations demonstrate the validity.