Determination of Coverage Oscillation for Inclined Communication Satellite

Yıl 2020, Cilt: 24 Sayı: 5, 973 - 983, 01.10.2020

İbrahim Öz , Ümit Cezmi Yılmaz

https://doi.org/10.16984/saufenbilder.702190

Cited By: 8

Öz

The communication engineers need to evaluate footprint movement to deploy a ground station. Geostationary communication satellite’s inclination angle causes the movement of a satellite footprint. The calculation of the inclination angle requires complex astronomical knowledge and mathematical calculations. On the other hand, a satellite communication engineer does not need a very accurate inclination angle value to design a ground station for required service availability. We propose a practical method called trigonometric curve fitting for the inclination to solve the problem. The past and the future value of inclination can be evaluated by using the curve-fitting method. It is a simplified practical method and does not need advanced orbital dynamics knowledge. The orbit geometry and evaluated inclination angle are used for estimation of a coverage area movement. A satellite communication engineer can evaluate coverage area oscillation quickly and design a better link for an inclined orbit satellite by using the proposed method. We have evaluated the inclination angle of the communication satellite Sat-1 with the proposed method. Sat-1 spot beam movements and wide beam coverage area movements are estimated to obtain EIRP and G/T fluctuation for link budget purposes. The proposed method provides the results that are consistent with the results of measurements and the results of satellite operators’ professional tools.

Anahtar Kelimeler

coverage oscillation, geo satellite, communication, inclination, curve fitting

Teşekkür

We would like to thank Turksat Uydu Haberlesme ve Kablo TV AS for its invaluable support.

Kaynakça

• E. M. Soop, “Introduction to Geostationary Orbits”, ESA, : pp. 232-235, 1983.
• B. Gurol, , S. Gulgonul, , G. Gokay, , A. Okan, , I.Oz., “Optical monitoring of inter satellite distance between Turksat-2A And Turksat-3A. In Proceedings of 5th International Conference on Recent Advances in Space Technologies-RAST2011, pp.337-340, 2011.
• S. Hu-Li, H Yan-Ben, M. Li-Hua, P.Jun, Y. Zhi- Qiang and J. Hai-Fu, “Beyond life-cycle utilization of geostationary communication satellites in end-of-life”, Satellite Communications, Nazzareno Diodato(Ed), Intech, ISBN: 978-953-307-135-0, pp.323-365, 2010.
• L. Ma, “The Benefits of Inclined-Orbit Operations for Geostationary Orbit Communication Satellites”, Artificial Satellite, Vol.46, DOI: 10.2478/v10018-011-0007-1, 2011 .
• I. Oz, “Evaluation of station location for orbit determination of geo satellites at different slots”, 8th International Conference on Recent Advances in Space Technologies (RAST), pp.375-379, 2017.
• Z. Chang-Yin, Z. Ming-Jiang, W. Hong-Bo, X. Jian-Ning, Z. Ting-Lei, Z. Wei, “Analysis on the long-term dynamical evolution of the inclined geosynchronous orbits in the Chinese BeiDou navigation system, Advances in Space Research, 56 pp. 377–387, 2015.
• Y. Han, L. Ma, Q. Qiao., Z.Yin, H.Shi, G. Ai, “Functions of retired GEO communication satellites in improving the PDOP value of CAPS”, Sci China Ser G-Phys Mech Astron, Vol. 52, No. 3, pp.423-433, 2009.
• G.Dai, , X.Chen, , M.Zuo, , L. Peng, , M. Wang, Z.Song, “The Influence of Orbital Element Error on Satellite Coverage Calculation”. International Journal of Aerospace Engineering, 2018.
• S. Y. Fu, Z. R. Wang, , H. L. Shi, , L. H. Ma, “The application of decommissioned GEO satellites to CAPS”, In IOP Conference Series: Materials Science and Engineering,Vol. 372, No. 1, pp. 012033, IOP Publishing, 2018.
• C.Sun, H. Jiang, J. Zhang, Y. Tao, , B. Li, C. Zhao, “Modeling and Calibrating the Ground-Surface Beam Pointing of GEO Satellite”, IEEE Access, 7, 121897-121906, 2019.
• S.Lee, “GEO Satellite Collision Avoidance Maneuver Strategy Against Inclied GSO Satellite”, In SpaceOps :1294441, 2012.
• A. F. Yagli, M. Gokten, , S. Gulgonul, , I. Oz, O. Dalbay,“Regional positioning system using Turksat satellites”, In 6th International Conference on Recent Advances in Space Technologies RAST:2013: pp.237-240, 2013.
• A. E. Emam, J. Victor, , M. A. Elghany, “Performance Assessment of GSO Satellite before and after Enhancing Pointing Effect”, World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, 12: pp. 1434-1440, 2015.
• A. E. Emam, , M. A. Elghany, , “Collocation Assessment between GEO and GSO Satellites”, International Journal of Aerospace and Mechanical Engineering,: 9(12), pp. 2124-2132, 2015.