Results 21 to 30 of about 2,478 (258)
LEO Satellite Communications with Massive MIMO [PDF]
ICC 2020 - 2020 IEEE International Conference on Communications (ICC), 2020 Low earth orbit (LEO) satellite communications are expected to be incorporated in future wireless networks to provide global wireless access with enhanced data rates. Massive multiple-input multiple-output (MIMO) techniques, though widely used in terrestrial communication systems, have not been applied to LEO satellite communication systems.
Li You 0001 +5 more
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On-Demand Routing in LEO Satellite Systems [PDF]
2007 IEEE International Conference on Communications, 2007 In this paper, a location-assisted on-demand routing (LAOR) protocol for low earth orbit (LEO) satellite systems is proposed and evaluated. This protocol can be viewed as a variant of the well-known ad-hoc on-demand distance vector (AODV) routing protocol, tailored to the requirements imposed by the characteristics of LEO satellite systems' topology ...
Stylianos Karapantazis +2 more
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Controlling Antenna Sidelobe Radiation to Mitigate Ku-Band LEO-to-GEO Satellite Interference
IEEE Access, 2023 Low-Earth orbiting (LEO) satellites now can provide broadband service anywhere in the world, but they must share the radio spectrum with geosynchronous Earth-orbiting (GEO) satellites.
Alex Hills +3 more
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Remote Sensing, 2023 We introduce an approach for the direct measurement of the gravitational potential (GP) along the trajectory of a satellite, with a specific focus on Low-Earth Orbit (LEO) satellites.
Ziyu Shen +8 more
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Performance Analysis of LEO Satellite Networks [PDF]
, 2002 We present an analytical model for computing call blocking probabilities in a LEO satellite network that carries voice calls. Both satellite-fixed and earth-fixed constellations with inter-orbit links and hand-offs are considered. The model is analyzed approximately by decomposing it into sub-systems.
Abdul Halim Zaim +2 more
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BeiDou Augmented Navigation from Low Earth Orbit Satellites
Sensors, 2019 Currently, the Global Navigation Satellite System (GNSS) mainly uses the satellites in Medium Earth Orbit (MEO) to provide position, navigation, and timing (PNT) service.
Mudan Su +3 more
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Multi-LEO Satellite Stereo Winds
Remote Sensing, 2023 The stereo-winds method follows trackable atmospheric cloud features from multiple viewing perspectives over multiple times, generally involving multiple satellite platforms. Multi-temporal observations provide information about the wind velocity and the observed parallax between viewing perspectives provides information about the height.
James L. Carr +3 more
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LEO ISL-Assisted BDS-3 and LEO Rapid Joint Precise Orbit Determination
Remote SensingBDS-3 faces challenges in achieving precision orbit determination (POD) due to the difficulty of establishing a globally uniform distribution of independently operated ground tracking stations. The use of onboard BDS-3 observations collected by low Earth
Le Wang +4 more
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Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System
Remote Sensing, 2020 Low Earth orbit (LEO) satellites located at altitudes of 500 km~1500 km can carry much stronger signals and move faster than medium Earth orbit (MEO) satellites at about a 20,000 km altitude.
Meiqian Guan +4 more
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Optimization Design of Routing Algorithm Based on GEO/LEO Double-Layer Satellite Network [PDF]
Jisuanji gongcheng, 2020 Satellite network topology is temporally variant,causing frequent link interruption and end to end long delay between satellites.To address the problem,this paper constructs a double-layer network architecture for satellites on Geosynchronous Earth Orbit(
ZHANG Taijiang, LI Yongjun, ZHAO Shanghong
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