FMCW SAR: From design to realization

This paper presents crucial techniques for the realization of frequency modulated continuous wave synthetic aperture radar (FMCW SAR). To begin with, the principle of FMCW SAR is reviewed in detail, then digital unit is focused to present. The digital unit includes real-time signal processor, mass data storage. Real-time imaging algorithm and its mapping to digital signal processor (DSP) as well as the SAR video formation are also proposed. Finally, beneficial results of the flight trial are presented to show the performance of the FMCW SAR system.