Results 81 to 90 of about 2,340 (256)
Mission Planning for LEO Satellite IoT Constellation Based on Genetic Algorithm
天地一体化信息网络A mission planning algorithm based on genetic algorithm was designed for LEO satellite IoT constellation with no inter-satellite links, aimed to achieve real-time data communication through multiple ground stations while maximized the resource allocation
Yanhong LI +4 more
doaj +2 more sources
Orbit Determination Method for BDS-3 MEO Satellites Based on Multi-Source Observation Links
Remote SensingResearch on augmentation and supplement systems for navigation systems has become a significant aspect in comprehensive positioning, navigation and timing (PNT) studies.
Jie Xin, Kai Li
doaj +1 more source
GNSS RTK Positioning Augmented with Large LEO Constellation
Remote Sensing, 2019 It is widely known that in real-time kinematic (RTK) solution, the convergence and ambiguity-fixed speeds are critical requirements to achieve centimeter-level positioning, especially in medium-to-long baselines.
Xingxing Li +5 more
doaj +1 more source
Retrieval of Raindrop Size Distribution Using Dual-Polarized Microwave Signals from LEO Satellites: A Feasibility Study through Simulations. [PDF]
Sensors (Basel), 2021 Shen X, Huang DD.
europepmc +1 more source
Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2
Advanced Materials, EarlyView.Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang +3 more
wiley +1 more source
Advanced Materials, EarlyView.ABSTRACT The optoelectronic performance of organic light‐emitting diodes (OLEDs) is critically governed by charge injection from electrodes into organic layers, where significant energy barriers at the interfaces often impede efficient charge injection.
Amarja S. Katware +7 more
wiley +1 more source
Advanced Materials, EarlyView.A hybridized charge‐transfer window combining short‐range and long‐range charge transfer is realized within a fully conjugated multi‐resonance thermally activated delayed fluorescence framework. The resulting excited‐state hybridization minimizes the singlet–triplet energy gap (0.04 eV) and enables ultrafast reverse intersystem crossing (krISC = 2.1 ...
Uisung Lee +3 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
doaj
SoftwareXLEO (Low Earth Orbit)-based PNT (Positioning, Navigation and Timing) has become a research topic of much interest and a focus of development. As LEO satellites for PNT are expected to independently provide space-time references in the future, similar to ...
Zhao Xi, Yu Baoguo, Luo Bin
doaj +1 more source
From Copper Nanoparticles to Alumina Encapsulated Porous Layers With Enhanced Mechanical Stability
Advanced Materials Interfaces, EarlyView.This study analyzes the synthesis‐structure relation of individual Cu nanoparticles and highly porous nanoparticle‐based Cu films using different sputtering‐based nanoparticle sources. The inherent mechanical instability of the films is tackled with Al2O3 encapsulation through atomic layer deposition, enabling 4‐fold increase in critical force in ...
Dominik Gutnik +6 more
wiley +1 more source