Azimuth-Extended Spotlight SAR Based on Multifrequency Subpulse Diversity
An azimuth wide-swath spotlight synthetic aperture radar (SAR) imaging method utilizing multifrequency subpulse (MFSP) diversity is proposed. Initially, the MFSP scheme is formulated by dividing the transmit pulse into multiple subpulses, where each is assigned a distinct carrier frequency offset with bandwidth-level s...