Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
권호 표지
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)
  • Received : 2020.09.25
  • Accepted : 2021.07.23
  • Published : 2021.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

Acknowledgement

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).

References

  1. Satellite Quick Facts, Satellite Database of UCS (Union of Concerned Scientists). (2021, May.) [Internet]. Available: https://ucsusa.org/resources/satellite-database.
  2. W. L. Stutzman, Polarization in Electromagnetic Systems, 2nd ed., Norwood, MA: Artech House, 1993.
  3. S. R. Saunders and A. Aragon-Zavala, Antennas and Propagation for Wireless Communication Systems, Hoboken: NJ, John Wiley & Sons, 2007.
  4. Lim, Hyunsu, "The GK2A/2B Ground System after the COMS," in 14th International Conference on Space Operations, Daejeon, pp 2320, 2016. DOI: 10.2514/6.2016-2320.
  5. ETSI, "Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 4-1: System-dependent requirements for antennas," Final draft ETSI EN 302 217-4-1 V1.4.1, 2009.
  6. C. A. Balanis, Antenna Theory, Analysis and Design, 4th ed., Hoboken: NJ, John Wiley & Sons, 2016.
  7. ITU, "Final acts of the world administrative radio conference on the use of the geostationary-satellite orbit and the planning of space services utilizing it," in WARC ORB-88, Geneva, 1988.