Balanced Low Earth Satellite Orbits
نویسندگان
چکیده
منابع مشابه
The Inclination Window for Low Earth Sun Synchronized Satellite Orbits
Generally, circular orbits of satellites are categorized as Geosynchronous Earth Orbits (GEO), Medium Earth Orbits (MEO) and Low Earth Orbits (LEO). The main difference between them is their attitude above the Earth’s surface (Richharia, 1999; Roddy, 2006; Maral and Bousquet, 2002). The Sun synchronization feature is typical for LEOs. Sun synchronized low Earth orbits have a very wide applicati...
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By nodal regression and apsidal precession, the Earth flattering at satellite low Earth orbits (LEO) is manifested. Nodal regression refers to the shift of the orbit’s line of nodes over time as Earth revolves around the Sun. Nodal regression is orbit feature utilized for circular orbits to be Sun synchronized. A sun-synchronized orbit lies in a plane that maintains a fixed angle with respect t...
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Fractional Order Control methods were applied to a three-axis reaction wheels satellite attitude control system. To show the advantages of this method, a comparative study between a Linear Quadratic Regulator and a Fractional Order Control was established through two principal fractional control laws. The aim is to establish an efJicient control law which satisJies a given speczjication and mai...
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The “traditional” way of designing constellations of communications satellites in low Earth orbit is to optimize the design for a specified global capacity. This approach is based on a forecast of the expected number of users and their activity level, both of which are highly uncertain. This can lead to economic failure if the actual demand is significantly smaller than the one predicted. This ...
متن کاملHandover Management in Low Earth Orbit (LEO) Satellite Networks
Low Earth Orbit (LEO) satellite networks will play an important role in the evolving information infrastructure. Satellites in the low earth orbits provide communication with shorter end-to-end delays and efficient frequency usage. However, some problems need to be solved before LEO satellite systems can be successfully deployed. One of these problems is the handover management. The objective o...
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ژورنال
عنوان ژورنال: Advances in Astronomy
سال: 2020
ISSN: 1687-7969,1687-7977
DOI: 10.1155/2020/7421396