Drone-Based Micro-SAR Imaging System and Performance Analysis through Error Corrections

Abstract

The use of small drone platform has become a popular topic in these days but its application for SAR operation has been little known due to the burden of the payload implementation. Drone platforms are distinguished from the conventional UAV system by the increased vulnerability to the turbulences, control-errors and poor motion stability. Consequently, sophisticated motion compensation may be required to guarantee the successful acquisition of high quality SAR imagery. Extremely limited power and mass budgets may prevent the use of additional hardwares for motion compensation and the difficulty of SAR focusing is further aggravated. In this paper, we have carried out a feasibility study of mico-SAR drone operation. We present the image acquisition results from the preliminary flight tests and a quality assessment is followed on the experimental SAR images. The in-flight motion errors derived from the unique drone movements are investigated and attempts have been made to compensate for the geometrical and phase errors caused by motions against the nominal trajectory. Finally, the successful operation of drone SAR system is validated through the focussed SAR images taken over test sites.

High-Power Wireless Power Transfer of Drones with Wide Charging Area

“…사 분야 등의 영역에서 사용될 목적으로, 드론 개발에 관 한 연구는 전망이 매우 좋다 [1]～ [4] . 현재 군사 분야에서는 드론의 무력화를 위한 공격 및 방어에 관한 연구가 활발 히 진행되고 있으며, 짧은 비행시간을 보완하기 위하여 배터리 개발 및 충전 방식에도 많은 관심이 주목되고 있 다 [5]～ [11] .…”