A Novel Constellation of Satellites

Danesfahani, R.; Pirhadi, M.

doi:10.1109/ictta.2006.1684798

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…The problem of satellite constellation design to achieve the full Earth coverage has been addressed in [12]. The geometries of satellite constellations as a function of the inter-satellite distances and the maximum latitude to provide the continuous Earth coverage are investigated in [13]. The capacity of satellite communication network created by some satellite constellations in different orbits is evaluated in [14].…”

Section: Abbreviationsmentioning

confidence: 99%

“…However, neither other orbital in-view periods which may also provide connectivity nor the minimum required elevation of the satellite above the horizon are considered. Typical value of the minimum elevation for a satellite to become visible is about 10 • [13,19]. The coverage of a single LEO satellite at the fixed sky location is obtained in [20], and later elaborated in [21].…”

Section: Abbreviationsmentioning

confidence: 99%

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Regional Coverage Analysis of LEO Satellites with Kepler Orbits

Morgan-Jones,

Loskot

2019

Preprint

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Low Earth orbit (LEO) satellites are being considered for expanding legacy terrestrial cellular networks. The end users may not be able to optimize satellite orbits and constellations, however, they can optimize locations of ground stations which aggregate terrestrial traffic and inter-connect with over-passing satellites. Such optimization requires a model of satellite visibility to decide when the satellite becomes visible to the ground station in a given geographical location. Our model assumes ideal Kepler orbits parameterized by six orbital elements to describe the satellite movements. The steps of Kepler orbit modeling are presented in detail to enable other studies requiring geometric representation of satellite trajectories in the 3D space or their 2D footprint on the Earth surface. The long-term mean time satellite visibility (MTSV) metric is defined to measure satellite visibility at a given ground station. Numerical results reveal that efficiency of optimizing the ground station locations is dependent on the satellite orbit and other satellite visibility constraints. The ground station location optimization is especially important when MTSV is improved by orthogonal time sharing schemes using multiple satellites on the same or different orbits. Similar conclusions can be drawn assuming other performance metrics such as the capacity of links between the ground station and the satellites.

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Section: Abbreviationsmentioning

confidence: 99%

Section: Abbreviationsmentioning

confidence: 99%

Regional Coverage Analysis of LEO Satellites with Kepler Orbits

Morgan-Jones,

Loskot

2019

Preprint

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“…However, short and infrequent pass times of these highly inclined constellations make them useless for tropical countries around the equator. To provide improved coverage for these countries, a low equatorial orbit (LEQ) has been proposed in [6]. Further, a constellation of 9 medium earth equatorial (MEQ) satellites was proposed in [7] to cover geographical regions with latitude limits between +400 using an equatorial orbit of 10,000 km altitude.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into Availability Percentage of Non-Geostationary Satellites

Danesfahani

Moghadasi²,

Sharifkhani³

2006 2nd International Conference on Information &Amp; Communication Technologies

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A package has been developed to assist investigation ofthe availability percentage ofnon-geostationary satellites. The package is general and can be used to simulate the availability percentage for all regions on both sides of the equatorial orbit. Further, the availability percentage for any specific country can be determined. The availability percentage time of Globalsatr, Iridium and Molniya constellations are simulated with this package for different points on earth.

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A Novel Constellation of Satellites

Cited by 2 publications

References 1 publication

Regional Coverage Analysis of LEO Satellites with Kepler Orbits

Regional Coverage Analysis of LEO Satellites with Kepler Orbits

An Investigation into Availability Percentage of Non-Geostationary Satellites

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