Results 81 to 90 of about 1,304 (240)
Evaluation of debris mitigation options for a large constellation
, 2020 Large constellations of satellites in Low Earth Orbit (LEO) may adversely impact the sustainable use of the space environment over the long-term unless appropriate plans for orbital debris mitigation measures are incorporated into the design and ...
Lewis, Hugh G.; id_orcid +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son +5 more
wiley +1 more source
Analytical Modeling of LEO Satellite Mutual Visibility under Perturbations
Communications in Science and TechnologyThis present study develops an analytical model for mutual visibility in perturbed Low Earth Orbit (LEO), explicitly accounting for Earth’s oblateness (J2 and J3) and atmospheric drag.
Mohamed R Amin
doaj +1 more source
Application of Ibuprofen Sodium Dihydrate for Thermochemical Energy Storage
Advanced Functional Materials, EarlyView.Ibuprofen sodium dihydrate is introduced as a durable organic salt hydrate for low‐temperature thermochemical energy storage, operating within 60°C–110°C with high energy density. At the material level, it delivers ∼99.9% cycling efficiency over 150 cycles without deliquescence, enabled by a dual energy‐storage mechanism coupling dehydration and phase ...
Kavin Chakravarthy Thangaraj +10 more
wiley +1 more source
DESIGN AND ASSESSMENT OF A LEO GNSS MINICONSTELLATION FOR POSITIONING, NAVIGATION, AND TIMING (PNT)
, 2023 Recently, there has been a resurgent demand in the United Arab Emirates for more accurate positioning, navigation, and timing signals, especially for some targeted applications such as autonomous vehicles and flying taxis.
Mohamad, Mariya Abdulkhaleq
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Advanced Functional Materials, EarlyView.A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon +10 more
wiley +1 more source
Multi-Constellation Software-Defined Receiver for Doppler Positioning with LEO Satellites
, 2020 A Multi-Constellation Software-Defined Receiver (MC-SDR) is designed and implemented to extract the Doppler measurements of Low Earth Orbit (LEO) satellite’s downlink signals, such as Orbcomm, Iridium-Next, Globalstar, Starlink, OneWeb, SpaceX, etc.
René Landry, Farzan Farhangian
core +1 more source
Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films
Advanced Functional Materials, EarlyView.This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge +4 more
wiley +1 more source
Satellite constellation design and radio resource management using genetic algorithm.
, 2018 A novel strategy for automatic satellite constellation design with satellite diversity is proposed. The automatic satellite constellation design means some parameters of satellite constellation design can be determined simultaneously. The total number of
Asvial, Muhamad.
core +1 more source
Design of Mega LEO Constellations for Continuous Coverage over Pakistan: Satellite Communication
, 2023 Satellite communication was effectively done in Geostationary Earth Orbit (GEO) in the past years. Recently the trend has shifted from GEO to Low Earth Orbit (LEO).
Faisal, Nadeem +3 more
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