Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Development of CanSat System With 3D Rendering and Real-time Object Detection Functions

3D 렌더링 및 실시간 물체 검출 기능 탑재 캔위성 시스템 개발

  • Kim, Youngjun (Department of Electronics and Communication Engineering, Republic of Korea Air Force Academy) ;
  • Park, Junsoo (Department of Computer Science, Republic of Korea Air Force Academy) ;
  • Nam, Jaeyoung (Department of Computer Science, Republic of Korea Air Force Academy) ;
  • Yoo, Seunghoon (Department of Computer Science, Republic of Korea Air Force Academy) ;
  • Kim, Songhyon (Department of Computer Science, Republic of Korea Air Force Academy) ;
  • Lee, Sanghyun (Department of Aerospace Engineering, Republic of Korea Air Force Academy) ;
  • Lee, Younggun (Department of Electronics and Communication Engineering, Republic of Korea Air Force Academy)
  • Received : 2021.04.05
  • Accepted : 2021.06.01
  • Published : 2021.08.01
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Abstract

This paper deals with the contents of designing and producing reconnaissance hardware and software, and verifying the functions after being installed on the CanSat platform and ground stations. The main reconnaissance mission is largely composed of two things: terrain search that renders the surrounding terrain in 3D using radar, GPS, and IMU sensors, and real-time detection of major objects through optical camera image analysis. In addition, data analysis efficiency was improved through GUI software to enhance the completeness of the CanSat system. Specifically, software that can check terrain information and object detection information in real time at the ground station was produced, and mission failure was prevented through abnormal packet exception processing and system initialization functions. Communication through LTE and AWS server was used as the main channel, and ZigBee was used as the auxiliary channel. The completed CanSat was tested for air fall using a rocket launch method and a drone mount method. In experimental results, the terrain search and object detection performance was excellent, and all the results were processed in real-time and then successfully displayed on the ground station software.

본 논문은 정찰용 하드웨어와 소프트웨어를 설계하고 제작하여 캔위성 플랫폼과 지상국에 탑재 후 기능을 검증한 내용을 다루고 있다. 주요 정찰 임무는 크게 2가지로 구성되는데, 레이더와 GPS, IMU 센서를 이용해 주변 지형을 3D로 렌더링하는 지형탐색과 광학 카메라 영상분석을 통한 실시간 주요 물체 검출이다. 그리고 캔위성 시스템의 완성도를 높이기 위해 GUI 소프트웨어를 통해 데이터 분석효율을 향상하였다. 구체적으로 지형정보와 물체 탐지정보를 실시간으로 지상국에서 확인할 수 있는 소프트웨어를 제작하였으며, 비정상패킷 예외처리와 시스템 초기화 기능을 통해 임무 실패를 방지하였다. 통신계는 LTE와 AWS 서버를 통한 통신을 메인 채널로 사용했고, 보조 채널로 지그비를 사용하였다. 완성된 캔위성을 로켓 발사 방식과 드론 탑재 방식으로 공중 낙하 실험하였다. 실험 결과, 지형탐색과 물체 검출 성능이 우수하였으며, 모든 결과를 실시간으로 처리 후 지상국 소프트웨어에 성공적으로 시현하였다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부가 주최하고 KAIST 인공위성연구소가 주관하며, 한국항공우주연구원에서 후원하는 2020 캔위성 체험 경연대회와 공군사관학교 교육진흥재단의 지원으로 수행되었습니다.

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