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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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An Analysis of Radio Propagation Range of USV Communication System for Maritime Wireless Environment

해상 환경에서 무인수상정용 통신시스템의 전파 통달거리 분석

  • Kim, Taehyeon (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Park, Hyunsung (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Gwak, Sangyell (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Sungho (The 6th Research and Development Institute, Agency for Defense Development) ;
  • Jeon, Hoseok (Communication R&D Lab, LIG Nex1)
  • 김태현 (국방과학연구소 제6기술연구본부) ;
  • 박현성 (국방과학연구소 제6기술연구본부) ;
  • 곽상열 (국방과학연구소 제6기술연구본부) ;
  • 이성호 (국방과학연구소 제6기술연구본부) ;
  • 전호석 (LIG넥스원(주) 통신연구센터)
  • Received : 2018.06.01
  • Accepted : 2018.10.05
  • Published : 2018.12.05
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Abstract

In this paper, we analyzed the communication distances in the flat and spherical earth model using the main specifications of the wireless communication device under development to be installed in the unmanned surface vehicle(USV). We installed the wireless communication device on the test ship and the actual communication test was performed in the South Sea of Korea, it compared the experimental result with the simulated results. If the installation altitude of the transmitting and receiving antennas is low, there is not the big difference between the two models. However, when the altitude of one of the two antennas is high, the spherical earth model has similar results to the experimental data. As the altitude of the antenna installation increases, fading occurs in a certain section. We expect that this fading can be overcome through antenna technologies such as space diversity.

Keywords

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Fig. 1. Developmental concept of USV remote operation and control technology

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Fig. 3. Frame structure of communication system

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Fig. 4. Vertical antenna pattern of (a) the transmitting and (b) receiving antenna

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Fig. 5. Propagation model in the flat earth

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Fig. 6. Propagation model in the spherical earth

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Fig. 7. Simulation of communication range(@Tx Ant. height 16.5 m, Rx Ant. hight 141 m)

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Fig. 8. Simulation of communication range(@Tx Ant. height 3 m, Rx Ant. hight 20 m)

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Fig. 9. Comparison of the communication distances of the base station(Rx) by the antenna height (@Tx Ant. height 3 m)

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Fig. 11. Path of the test ship for maritime communication

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Fig. 12. Comparison of the measured result and simulated result(@Tx Ant. height 16.5 m, Rx Ant. hight 141 m)

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Fig. 13. Simulation result using the diversity antenna (@Tx Ant. height 3 m, Rx Ant. hight 15 and 20 m)

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Fig. 2. (a) System model of base station and (b) USV terminal

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Fig. 10. (a) Receiving antenna on the rooftop and (b) transmitting antenna on the test ship

Table 1. Simulation parameters

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