Satellite Communications Systems

Maral, Grard; Bousquet, Michel

doi:10.1002/9780470834985

Cited by 292 publications

(174 citation statements)

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“…Traditional methods and results are based on the constraint of a lower minimum elevation angle because the coverage region of single satellite is large enough [5]. However, to transmit high-speed and broadband signals, satellites are equipped with narrow-beamwidth antennas which limit the coverage of single satellite [6].…”

Section: Introductionmentioning

confidence: 99%

Design of LEO Constellations Providing Internet Services Based on SOC Method

et al. 2017

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Abstract. Narrow-beamwidth antenna is applied to LEO satellite constellations to provide high-speed internet services for the globe. Low-altitude, limited coverage region of single satellite and large scale are the main features of them. In this paper, under the constraint of specified half-beam angle of antenna, both inclined and polar orbit constellations are analysed based on Streets-of-Coverage method to provide continuous coverage. The results indicate that the coverage performance of single satellite is the key factor which can affect the configuration and number of constellations. When the orbit altitude is 1200 km and half-beam angle is 32 degrees, up to thousands of satellites are required for constellations providing internet services for zonal region 60 degrees from the equator. Non-symmetrical polar constellations show the best performance of continuous coverage and require approximately half of the satellites of inclined orbit constellations. The required satellites with different single coverage performance are also investigated as a reference for future research.

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Section: Introductionmentioning

confidence: 99%

Design of LEO Constellations Providing Internet Services Based on SOC Method

et al. 2017

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“…Measurements and health status of the other subsystem and equipment are transmitted to ground station through TCR chain. Ranging is also applied to determine satellite to ground station distance and orbital parameters [1][2][3]. In a commercial communication satellite, TCR subsystem utilizes low bit rate links since it carries executable commands and health status of the overall satellite.…”

Section: Introductionmentioning

confidence: 99%

Ti̇cari̇ Uydularda S Ve Ku Bant TKM Altsi̇stemi̇ Ödünleşi̇m Anali̇zleri̇

Demircioğlu¹

2016

Mugla Journal of Science and Technology

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“…The space segment consists of one or more artificial satellites as presented in Fig.1. In case of more satellites, they are organized in a network called constellation [1]. Constellation of satellites is done in orbits.…”

Section: Introductionmentioning

confidence: 99%