DOI QR코드

DOI QR Code

Theoretical Interpretation of Interference Arising Between Closely Spaced Dual Polarized Geostationary Satellites

  • Choi, Won Jun (Environmental Satellite Center, National Institute of Environmental Research) ;
  • Lee, Dong-Won (Environmental Satellite Center, National Institute of Environmental Research) ;
  • Eun, Jong Won (Satellite Technology- Information Technology Convergence R&D Center, Namseoul University) ;
  • Lee, Jae-Hyun (Department of Radio and Information Communications Engineering, Chungnam National University)
  • 투고 : 2020.09.25
  • 심사 : 2021.07.23
  • 발행 : 2021.09.30

초록

The interference between closely placed co-coverage satellites was analyzed. In general, a satellite network may use different orthogonal polarizations and frequencies to increase the throughput of a satellite. However, when orthogonal linear polarization (horizontal polarization and vertical polarization) or orthogonal circular polarization (left-handed circular polarization and right-handed circular polarization) is used, the signal from one polarization sense to another may be coupled, resulting in cross-polarization interference. This signal-coupling arises due to the finite value of the cross-polarization discrimination of the earth station. In this study, field equations were used to analyze the interference between adjacent satellites using co-frequency. The level of interference was compared to that when two adjacent satellites used the same polarization. The simulation results show that the interference mainly depends on the off-axis co-polar pattern and the cross-polar pattern of the earth station antenna.

키워드

과제정보

This work was supported by a grant from the National Institute of Environment Research (NIER), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIER-2019-01-02-056).

참고문헌

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