System Implementation and Algorithm Research of C-band MiniSAR

A compact, low-cost, fully polarimetric C-band FMCW (Frequemcy Modulated Continuous Wave) MiniSAR system is proposed for multi-rotor UAV platforms. The system employs a PLL+VCO-based chirp generator and a de-chirping architecture to reduce ADC sampling rates and overall power consumption. Optimized for small UAVs, the design enables efficient data acquisition and offline SAR imaging. Simulation results confirm the feasibility and effectiveness of the proposed system for short-range remote sensing applications.