A Geometrical Autofocus Method for UAV-Based SAR (opens in new tab)

Uncrewed aerial vehicle (UAV)-borne synthetic aperture radar (SAR) radar technology is gaining increasing attention in the remote sensing field due to its low cost, high flexibility, rapid response, and short revisit time. High-quality SAR imaging requires precise platform localization; however, low-cost, lightweight UAV platforms often struggle to achieve the subwavelength navigation accuracy required, particularly at high carrier frequencies. To address this limitation, autofocusing (AF) al...