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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Preliminary Design of PNUSAT-1 Cubesat for Vessel Monitoring

선박 모니터링을 위한 PNUSAT-1 큐브위성 시스템 예비 설계

  • Kim, Haelee (Department of Aerospace Engineering, Pusan National University) ;
  • Cho, Dong-hyun (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Sanghoon (Neo Health Technology) ;
  • Park, Chanhwi (Department of Aerospace Engineering, Pusan National University) ;
  • Lim, Ha Kyeong (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Geonwoo (Department of Aerospace Engineering, Pusan National University) ;
  • Kwak, Minwoo (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Changhyun (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Shinhyung (Department of Aerospace Engineering, Pusan National University) ;
  • Koo, Inhoi (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Daewoo (Department of Aerospace Engineering, Pusan National University)
  • Received : 2021.11.02
  • Accepted : 2022.01.03
  • Published : 2022.02.01
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Abstract

AIS(Automatic Identification System) is a device that automatically transmits and receives ship information and is mounted on the ship. AIS information of ships near the coast can be received on the ground, but when going out to sea more than 50 nautical miles, communication with the ground is cut off. To solve this problem, ship information can be transmitted to the ground through an AIS satellite equipped with an AIS receiver. There is no case of AIS satellite development in Korea yet, and many domestic shipping companies are using overseas AIS services. PNUSAT-1 is a 1U+ CubeSat, developed by Pusan National University, and it is equipped with an AIS receiver for monitoring of ships and transmitting ship information to the ground. Since the mission data of PNUSAT-1 is in text format, the data size is not large. In consideration of this, communication equipment, low-precision sensors, and actuators were selected. In this paper, system preliminary design of PNUSAT-1 was performed, requirements for mission performance, operation scenario and mode design, hardware and software selection, and preliminary design of each subsystem were performed.

선박자동식별장치(Automatic Identification System, AIS)는 선박의 정보를 자동으로 송수신하는 장치로 선박에 탑재된다. 연안 인근 선박의 AIS 정보는 지상에서 수신 가능하지만, 50해리 이상의 먼 해상으로 나가게 되면 지상과 통신이 두절되는 한계점을 가진다. 이를 해결하기 위해 AIS 수신기를 탑재한 AIS 위성을 통하여 먼 해상의 선박 정보를 지상으로 전송할 수 있다. 국내에서는 아직 AIS 위성 개발 사례가 없으며, 국내 다수의 선사는 해외의 AIS 서비스를 이용하고 있다. PNUSAT-1은 부산대학교에서 개발 중인 1U+ 큐브위성으로, 선박 모니터링을 위해 AIS 수신기를 탑재하여 선박 정보를 지상으로 전달하는 임무를 수행한다. PNUSAT-1은 임무 데이터가 텍스트 형태로 큰 용량의 데이터를 전송하지 않으므로 이에 부합하는 통신 장비, 저정밀 센서 및 구동기를 선택하였다. 본 논문에서 PNUSAT-1의 시스템 예비 설계를 수행하였으며, 임무 수행을 위한 요구사항, 운용 시나리오 및 모드 설계, 하드웨어 및 소프트웨어 선정 그리고 각 서브시스템의 예비설계를 수행하였다.

Keywords

Acknowledgement

이 논문은 대통령직속 국가균형발전위원회 및 부산광역시의 지원으로 수행된 연구의 결과임(지역발전 투자협약 시범사업, 과제번호 B0071016000042).

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