Low-cost, high-resolution, drone-borne SAR imaging

Ali Bekar, Michail Antoniou, Chris Baker

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Abstract

This article develops and examines methods for the production of real-world, very high-resolution imagery using a high-frequency drone-borne synthetic aperture radar (SAR) operating at short ranges. The significance of motion errors which lead to space-invariant/variant phase errors is discussed. Subsequently, an imaging algorithm capable of handling these errors is proposed and presented. The validity of the approach is tested through both simulation and experiment. We present novel short-range, fine-resolution imagery (less than 2 cm in cross-range) of an extended target area generated using a low-cost, drone-borne vehicular frequency-modulated continuous-wave (FMCW) radar operating at 77 GHz, without using a dedicated inertial navigation system (INS) or Global Positioning System (GPS).
Original languageEnglish
JournalIEEE Transactions on Geoscience and Remote Sensing
Early online date9 Jun 2021
DOIs
Publication statusE-pub ahead of print - 9 Jun 2021

Keywords

  • Drone synthetic aperture radar (SAR)
  • high-resolution imagery
  • mini-UAV SAR

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