Premier results of the multi-rotor based FMCW synthetic aperture radar system

Synthetic Aperture RADAR (SAR), with its all-time and all-weather operation capability, is nowadays one of the most important surveillance techniques. A multi-rotor based Ku-band SAR system with flexible deployment capability is presented in this paper. The SAR system employs linear frequency modulation continuous wave (FMCW) to simplify the system architecture and reduce transmission power. The multi-rotor based system is of small size and light weight, and is hence prone to motion error caused by air currents. Sophisticated autofocus algorithms are employed to compensate for such error.