우주기술과 응용 (Journal of Space Technology and Applications)

  • 제2권2호
  • /
  • Pages.121-136
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  • 2022
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  • 2799-3213(pISSN)
  • /
  • 2765-7469(eISSN)
한국우주과학회 (The Korean Space Science Society)
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소프트웨어 정의 라디오를 활용한 초소형위성용 선박정보수집장치의 수신시험

Utilizing Software-Defined Radio, Reception Test of AIS Payload Used in a Cube-Satellite

  • 김신형 (부산대학교 항공우주공학과) ;
  • 이창현 (부산대학교 항공우주공학과) ;
  • 김건우 (부산대학교 항공우주공학과) ;
  • 조동현 (부산대학교 항공우주공학과)
  • Kim, Shin-Hyung (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Chang-Hyun (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Gun-Woo (Department of Aerospace Engineering, Pusan National University) ;
  • Cho, Dong-Hyun (Department of Aerospace Engineering, Pusan National University)
  • 투고 : 2022.04.06
  • 심사 : 2022.04.24
  • 발행 : 2022.05.31
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초록

선박 통신에 있어서 선박자동식별시스템(automatic identification system)은 연안 해역의 선박 운항 모니터링, 선박 간의 항해 안전을 위한 정보 교환뿐만 아니라 해상관제 수단에도 필요하다. 그러나 이는 대략 160 MHz의 very high frequency (VHF) 대역을 사용함과 동시에 지구의 곡률로 인해 통신 거리의 한계가 존재한다. 이를 인공위성을 통해 해결하고 있지만, 저궤도의 초소형 위성에 대해서는 아직 많은 작업이 이루어지지 않았다. 본 논문에서는 소프트웨어 정의 라디오(SDR)를 활용하여 초소형위성용 선박정보수집장치의 수신시험을 증명하였다. R820T2 SDR을 활용하여 부산항에 정박해 있는 선박으로부터 AIS(automatic identification system) 데이터를 수집하였고, Adalm-Pluto와 매트랩 시뮬링크를 활용하여 이를 송신할 수 있는 환경을 구축하였다. 또한 감쇠기를 활용하여 위성까지 신호세기가 약해지는 과정을 모사하였다. 일련의 과정을 통해 AIS 탑재체에서 AIS 데이터의 수신 성공 여부를 시연하였다.

Automatic Identification System used in ship communication is required for marine control way, including monitoring of vessel operation in coastal and exchanging of information for safety navigation between them. But, it uses a very high frequency band of approximately 160 MHz, and at the same time, due to the curvature of Earth, there is a limit to the communication distance. Several demonstrations were made successfully over satellite, but not much work has been done yet through cube-satellite which has low-orbit at 500 km altitude. Here, we demonstrate a reception test of AIS (automatic identification system) receiver for a cube-satellites using software-defined radio (SDR). We collected AIS data from ship at port of Busan, Korea, using R8202T2 SDR and established to transmit them using Adam-Pluto and Matlab Simulink. The process of weakening the signal strength to a satellite was constructed using attenuator. Through above process, we demonstrated whether AIS data was successfully received from the AIS payload.

키워드

과제정보

본 연구는 부산광역시의 지역발전투자협약 시범사업(미래해양도시 부산의 신산업 혁신성장 생태계 조성)의 지원으로 수행되었습니다.

참고문헌

  1. U.S. Coast Guard Navigation Center, Automatic Identification System Overview, viewed 2022 Feb 22, available from: https://navcen.uscg.gov/?pageName=AISmain
  2. Lee JS, Heo O, Kim JH, Chung SW, A secure AIS protocol suggestion with analyses of the standard AIS protocol, J. Korea Inst. Inf. Electron. Commun. Technol. 9, 49-57 (2016). https://doi.org/10.17661/jkiiect.2016.9.1.049
  3. Kim BS, Hwang HG, Woo YT, A conceptual design of video-composite system for ship collision risk prediction and alarm, in Proceeding of the Korea Institute of Information and Communication Engineering, Gyeongju, 9-11 Jul 2020.
  4. Hong SK, Bae YG, Effects of marine officers' situation awareness on ship collision accidents in Korean coast, J. Ergon. Soc. Korea 38, 565-574 (2019). https://doi.org/10.5143/JESK.2019.38.6.565
  5. Namgung H, Jeong JS, Kim JS, Inference system of collision risk using ship near-collision data, J. Korean Inst. Intell. Syst. 29, 395-402 (2019). https://doi.org/10.5391/JKIIS.2019.29.5.395
  6. Maeng SY, Kim H, AIS data communication method based on ship grouping area, in Proceedings of Symposium of the Korean Institute of Communications and Information Sciences, Jeju, 19-21 Jun 2013.
  7. Kim BK, Hong SH, Kang J, The system for UAV to approach to a ship and to monitor via AIS information, J. Korea Inst. Inf. Commun. Eng. 25, 1124-1129 (2021). https://doi.org/10.6109/jkiice.2021.25.8.1124
  8. Kim H, Koo I, Lee D, Cho D, Lee S, et al., Preliminary design of PNUSAT-1 CubeSat for vessel monitoring, Korean Soc. Aeronaut. Space Sci. 50, 137-146 (2022). https://doi.org/10.5139/JKSAS.2022.50.2.137
  9. Lee SJ, Park IH, Database design and implementation for vessel AIS information application, J. Navig. Port Res. 34, 343-348 (2010). https://doi.org/10.5394/KINPR.2010.34.5.343
  10. Dembovskis A, AIS message extraction from overlapped AIS signals for SAT-AIS applications, PhD Dissertation, University of Bremen (2015), 1-35.
  11. Seo SB, Park JY, Kim YS, Kong JP, Lee SG, et al., Introductions of ruby based COSMOS and its considerations for payload tests, Curr. Ind. Technol. Trends Aerosp. 13, 117-126 (2015).