Results 61 to 70 of about 2,132 (298)
Seeking Optimal GNSS Radio Occultation Constellations Using Evolutionary Algorithms
Remote Sensing, 2019 Given the great achievements of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission in providing huge amount of GPS radio occultation (RO) data for weather forecasting, climate research, and ionosphere monitoring,
Xiaohua Xu +4 more
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Advanced Functional Materials, EarlyView.A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim +10 more
wiley +1 more source
天地一体化信息网络, 2020 With the development of the national major project of space-integrated-ground information network including space-based access network and LEO constellation system,it is urgently to be solved how to deal with the routing problem of LEO constellation with
Ci HE +3 more
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Demand and key technology for a LEO constellation as augmentation of satellite navigation systems
Satellite NavigationA Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS).
Yuanxi Yang +4 more
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Leveraging Multi-LEO Satellite Signals for Opportunistic Positioning
IEEE AccessThe study of navigation solutions other than GNSS is becoming increasingly important due to growing concerns about the vulnerability of GNSS to interference. The use of existing LEO satellite signals is a promising option in this respect.
Nabil Jardak, Ronan Adam, Quentin Jault
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Relay-Satellite-Assisted LEO Constellation NOMA Communication System
IEEE Transactions on Aerospace and Electronic SystemsThis paper proposes a relay satellite assisted low earth orbit (LEO) constellation non-orthogonal multiple access combined beamforming (R-NOMA-BF) communication system, where multiple antenna LEO satellites deliver information to ground non-orthogonal users.
Xuyang Zhang +6 more
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Integration of Low‐Voltage Nanoscale MoS2 Memristors on CMOS Microchips
Advanced Functional Materials, EarlyView.This article presents the first monolithic integration of nanoscale MoS2‐based memristors into the back‐end‐of‐line of foundry‐fabricated CMOS microchips in a one‐transistor‐one‐resistor (1T1R) architecture. The MoS2‐based 1T1R cells exhibit forming‐free, nonvolatile resistive switching with ultra‐low operating voltages, low cycle‐to‐cycle variability ...
Jimin Lee +16 more
wiley +1 more source
Rethinking LEO Mega-Constellation Routing to Provide Fast Internet Access Services [PDF]
, 2023 Zijian Yang +3 more
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Advanced Functional Materials, EarlyView.Nanoscale‐grooved indium gallium oxide (IGO) semiconductors, patterned via thermal nanoimprint lithography (NIL) using CD/DVD templates, are integrated into electrolyte‐gated transistor biosensors to overcome Debye length limitations. Precisely engineered concave–convex nanostructures modulate local electrostatic potentials, extend the effective Debye ...
Jong Yu Song +5 more
wiley +1 more source
Navigation and Positioning Methods Using Signal of Opportunity of Low Earth Orbit Satellites
天地一体化信息网络In recent years, low earth orbit (LEO) giant constellations have developed rapidly, and their main goal is to provide users with high-speed Internet services.
ZHANG Yichao +6 more
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