Results 21 to 30 of about 7,276 (303)
GNSS-based precise orbit determination for maneuvering LEO satellites [PDF]
, 2023 Maneuverability is essential for low Earth orbit (LEO) satellites to fulfill various operational objectives. However, the pre- cise orbit determination (POD) process might deteriorate due to imperfect satellite orbital dynamics modeling.
Arnold, Daniel +9 more
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Trends in LEO Satellite Handover Algorithms [PDF]
2021 Twelfth International Conference on Ubiquitous and Future Networks (ICUFN), 2021 In this paper, we review well-known handovers algorithms in satellite environment. The modern research trends and contributions are proposed and summarized in order to overcome their considering problems in satellite-air-ground integrated network environment caused by the fast movement of Low Earth Orbit (LEO) satellite and related frequent handover ...
S.-K. Park, Joongheon Kim
openaire +2 more sources
Determination of SLR station coordinates based on LEO, LARES, LAGEOS, and Galileo satellites. [PDF]
, 2021 The number of satellites equipped with retroreflectors dedicated to Satellite Laser Ranging (SLR) increases simultaneously with the development and invention of the spherical geodetic satellites, low Earth orbiters (LEOs), Galileo and other components of
Arnold, Daniel +5 more
core +1 more source
Integrated Precise Orbit Determination of Multi-GNSS and Large LEO Constellations
Remote Sensing, 2019 Global navigation satellite system (GNSS) orbits are traditionally determined by observation data of ground stations, which usually need even global distribution to ensure adequate observation geometry strength.
Xingxing Li +8 more
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
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
openaire +1 more source
Bridging Clock Gaps in Mega-Constellation LEO Satellites [PDF]
, 2022 In recent years, mega-constellation Low Earth Orbit (LEO) satellites have been proposed as an augmentation to the Global Navigation Satellite System (GNSS) for positioning on the ground, especially for those in measurement environments with limited ...
Wang, Kan +5 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source