Results 1 to 10 of about 107,756 (305)
The potential of a constellation of low earth orbit satellite imagers to monitor worldwide fossil fuel CO2 emissions from large cities and point sources. [PDF]
Carbon Balance Manag, 2020 Lespinas F +10 more
europepmc +3 more sources
Low Power LoRa Transmission in Low Earth Orbiting Satellites [PDF]
, 2021 In the recent past, a modulation technique called “LoRa” has become popular in the communication industry due to its long range capabilities with low power consumption, a few satellites have carried LoRa and worked successfully inspite of being skeptical about Doppler shift, packet loss, etc.
Shaarook, Rifath, Kesan, Srimathy
openaire +2 more sources
A low earth orbit satellite descent strategy
Technology transfer: fundamental principles and innovative technical solutionsThe object of the article is the method of descending a satellite from low Earth orbit (LEO) at the end of its service lifetime for its disposal. The main problem is to ensure a safe and cost-effective disposal of the satellite while minimizing risks to the environment and other objects in orbit.
Berik Zhumazhanov +2 more
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Balanced Low Earth Satellite Orbits [PDF]
Advances in Astronomy, 2020 The present work aims at constructing an atlas of the balanced Earth satellite orbits with respect to the secular and long periodic effects of Earth oblateness with the harmonics of the geopotential retained up to the 4th zonal harmonic. The variations of the elements are averaged over the fast and medium angles, thus retaining only the secular and ...
A. Mostafa, M. H. El Dewaik
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Low Earth Orbit Satellite Systems
Journal of Telecommunications and the Digital Economy, 2022 Satellites have been around for many decades, yet the low Earth orbit (LEO) was avoided as the cost exceeded the demand until recently. This paper is based on a live presentation to the Australian Telecommunications Association (TelSoc) by Ruth Pritchard-Kelly, Senior Advisor on Regulatory Affairs for OneWeb, and was chaired by TelSoc Broadband Futures
Ruth Pritchard-Kelly, John Costa
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BeiDou Augmented Navigation from Low Earth Orbit Satellites [PDF]
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. The weak navigation signals limit its usage in deep attenuation environments, and make it easy to interference and counterfeit by jammers or spoofers.
Mudan Su +3 more
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Satellite laser ranging to low Earth orbiters: orbit and network validation [PDF]
Journal of Geodesy, 2018 Satellite laser ranging (SLR) to low Earth orbiters (LEOs) provides optical distance measurements with mm-to-cm-level precision. SLR residuals, i.e., differences between measured and modeled ranges, serve as a common figure of merit for the quality assessment of orbits derived by radiometric tracking techniques. We discuss relevant processing standards
Daniel Arnold +3 more
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Microlensing planet detection via geosynchronous and low Earth orbit satellites [PDF]
, 2015 Planet detection through microlensing is usually limited by a well-known degeneracy in the Einstein timescale $t_E$, which prevents mass and distance of the lens to be univocally determined.
Beaulieu, J. P., Mogavero, F.
core +2 more sources
System modelling of very low Earth orbit satellites for Earth observation [PDF]
Acta Astronautica, 2021 23 pages, 6 figures, Accepted for publication in Acta Astronautica (2021-07-03)
Crisp, N.H. +10 more
openaire +6 more sources
A critical approach to the concept of a polar, low-altitude LARES satellite [PDF]
, 2002 According to very recent developments of the LARES mission, which would be devoted to the measurement of the general relativistic Lense--Thirring effect in the gravitational field of the Earth with Satellite Laser Ranging, it seems that the LARES ...
Ciufolini I +10 more
core +3 more sources