A New Conception of Multi-Stage DBF Based Spaceborne High-Resolution Wide-Swath SAR System

To meet the requirements of reconnaissance, surveillance, and target detection in large-scale sea areas, this paper proposes a new conception of space-based high-resolution ultra-wide-swath SAR system. Specifically, a high-dexterity beam group network is constructed to acquire wide-area information with high degree of freedom. and a pseudo-random space-time sampling is adopted to achieve pseudosparse coverage of wide swaths. The system meets the demands of large-scale reconnaissance and continuous target monitoring. In this paper, the key technology of the system is refined, and the corresponding solutions and processing methods are given.