Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Acquiring Precise Coordinates of Ground Targets through GCP Geometric Correction of Captured Images in UAS

무인 항공 시스템에서 촬영 영상의 GCP 기하보정을 통한 정밀한 지상 표적 좌표 획득 방법

  • Namwon An (Aerospace Technology Research Institute - 2nd Directorate, Agency for Defense Development) ;
  • Kyung-Mee Lim (Aerospace Technology Research Institute - 2nd Directorate, Agency for Defense Development) ;
  • So-Young Jeong (Aerospace Technology Research Institute - 2nd Directorate, Agency for Defense Development)
  • 안남원 (국방과학연구소 항공기술연구원 2부) ;
  • 임경미 (국방과학연구소 항공기술연구원 2부) ;
  • 정소영 (국방과학연구소 항공기술연구원 2부)
  • Received : 2022.12.20
  • Accepted : 2023.03.29
  • Published : 2023.04.05
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Abstract

Acquiring precise coordinates of ground targets can be regarded as the key mission of the tactical-level military UAS(Unmanned Aerial System) operations. The coordinates deviations for the ground targets estimated from UAV (Unmanned Aerial Vehicle) images may depend on the sensor specifications and slant ranges between UAV and ground targets. It has an order of several tens to hundreds of meters for typical tactical UAV mission scenarios. In this paper, we propose a scheme that precisely acquires target coordinates from UAS by mapping image pixels to geographical coordinates based on GCP(Ground Control Points). This scheme was implemented and tested from ground control station for UAS. We took images of targets of which exact location is known and acquired the target coordinates using our proposed scheme. The experimental results showed that errors of the acquired coordinates remained within an order of several meters and the coordinates accuracy was significantly improved.

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References

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