منابع مشابه
Precise Orbit Determination for Low Earth Orbit Satellites
The precise orbit determination problem is to accurately determine the position and velocity vectors of an orbiting satellite. In this paper we review the general contents of the orbit determination process, with particular emphasis on Low Earth Orbit (LEO) satellites. The different orbit determination approaches and the different force models contained within are briefly discussed. The two mai...
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In recent years the use of small multi mission satellites (SMMS) in Low Earth Orbit (LEO) for making voice, data and E-mail communications has been grown extensively. Low production cost, Low cost of lunching and low transmission power due to it’s low orbit of these satellites are some reasons for their vast usage. How over because of their low orbit they need to turn several times around the e...
متن کاملDirect Data Distribution from Low-Earth Orbit
NASA Lewis Research Center (LeRC) is developing the space and ground segnumt technologies necessary to demonsUa_ a direct data distribution (D 3) system for use in space-to-ground communication links fzom spa_r_ in low-Earthorbit (LEO) to strategically located tracking ground terminals. The key space segment technologies include a K-band (19 GHz) MMICbased transmit phased array antem_ and a mul...
متن کاملAn Effective Routing Algorithm for Low-earth Orbit Satellite Networks
A new routing algorithm for Low-earth orbit (LEO) satellite networks is designed in this study. For this reason genetic algorithms are used. A new objective function is obtained to find the suitable path according to the criteria of the delay and an aging factor. Also Call Blocking Probabilities (CBPs) are considered due to the dynamic nature of the satellite systems. This dynamic routing type ...
متن کاملPassive Aerodynamic Stabilization of a Low Earth Orbit Satellite
This paper discusses the influence of aerodynamic drag torque on the dynamics of a satellite in a very low altitude orbit. The larger atmospheric density in low altitude earth orbits results in significant aerodynamic drag torques acting on the satellite. With a conventional satellite design this may result in instability. This paper shows how the instability can be avoided, and how the aerodyn...
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ژورنال
عنوان ژورنال: IEEE Communications Magazine
سال: 2021
ISSN: ['0163-6804', '1558-1896']
DOI: https://doi.org/10.1109/mcom.2021.9475401