Investigating Orbital Configurations for a LEO Satellite Telephony Constellation over the Territory of Iran

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HAJIJAFARI MOHAMMAD; Aminabadi Sahar

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Paper Information

Journal: JOURNAL OF SPACE SCIENCE, TECHNOLOGY AND APPLICATIONS Year:2022 | Volume:1 | Issue:2 Page(s): 138-146

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Title

Investigating Orbital Configurations for a LEO Satellite Telephony Constellation over the Territory of Iran

Author(s)

HAJIJAFARI MOHAMMAD | Aminabadi Sahar | Issue Writer Certificate

Keywords

Satellite telephony

Walker delta Constellation

Orbital design

Constellation design

Abstract

In this paper, we investigate the orbital characteristics of a constellation consisting of 24 LEO satellites. All the configurations are based on the Walker Delta model, which include single-regulated (one constellation) and double-regulated (intertwined two constellations) models. For the sake of comparability, it is assumed that the orbital period of all satellites is 127 minutes and regarding the maximum altitude of 2000 km, the three eccentricities of zero (circle), 0. 19 (with an apogee of 2000 km) and 0. 097 (=0. 19/2) with the longest presence time on the mission area, are considered. In order to limit the search space, the inclination of all orbits is assumed 40 degrees and three values of 320, 340 and 360 degrees are considered for the argument of perigee in elliptical orbits. Examining the various scenarios, it can be seen that, Assuming the need for at least two observable satellites, basically, it can be found that for the argument of perigee of 320 degrees provides the best coverage beside the least standard deviation. As expected, the higher eccentric orbits perform better regardless of changes in signal strength. on the other hand, Double-regulated configurations can be associated with a larger number of satellites in view, which generally is accompanied by higher standard deviations. In General, a configuration may be chosen according to mission requirements and no one should be regarded as the absolute optimum.

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APA: Copy

HAJIJAFARI, MOHAMMAD, & Aminabadi, Sahar. (2022). Investigating Orbital Configurations for a LEO Satellite Telephony Constellation over the Territory of Iran. JOURNAL OF SPACE SCIENCE, TECHNOLOGY AND APPLICATIONS, 1(2 ), 138-146. SID. https://sid.ir/paper/956246/en

Vancouver: Copy

HAJIJAFARI MOHAMMAD, Aminabadi Sahar. Investigating Orbital Configurations for a LEO Satellite Telephony Constellation over the Territory of Iran. JOURNAL OF SPACE SCIENCE, TECHNOLOGY AND APPLICATIONS[Internet]. 2022;1(2 ):138-146. Available from: https://sid.ir/paper/956246/en

IEEE: Copy

MOHAMMAD HAJIJAFARI, and Sahar Aminabadi, “Investigating Orbital Configurations for a LEO Satellite Telephony Constellation over the Territory of Iran,” JOURNAL OF SPACE SCIENCE, TECHNOLOGY AND APPLICATIONS, vol. 1, no. 2 , pp. 138–146, 2022, [Online]. Available: https://sid.ir/paper/956246/en

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