Results 81 to 90 of about 115,982 (303)
Design of Low Earth Orbit Constellation Satellite
Journal of Research in Science and EngineeringThis research explores the Low Earth Orbit (LEO) satellite constellations, replicating the commercial OneWeb system. This work is divided into two key sections: Distance & Geometric Analysis and Link Performance Analysis. We start by designing a Walker - star network of 12 orbital planes featuring a dozen satellites orbiting 950 km above the Earth ...
Asnarulkhadi Abu Samah +1 more
openaire +1 more source
Advanced Functional Materials, EarlyView.A cooperative and competitive interrelationship between alcohol oxidation (AOR) and water oxidation (OER) was observed on a typical anode catalyst of Ni2P. In situ Raman spectroscopy and electrochemical analyses revealed a specific complementary mechanism between them, in which OER and AOR critically contribute to the activity and stability of anodic ...
Yong Yan +10 more
wiley +1 more source
Coverage Analysis of LEO Satellite Downlink Networks: Orbital Geometry Dependent Approach
IEEE AccessThe low-Earth-orbit (LEO) satellite network has emerged as a promising technology for providing global coverage with high data rates. However, analyzing the performance of the LEO satellite network is particularly challenging due to its dependence on ...
Junse Lee +3 more
doaj +1 more source
Natural Biomaterials for Osteochondral Repair: From Source to Strategy
Advanced Healthcare Materials, EarlyView.Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu +5 more
wiley +1 more source
An empirical model of long-term thermospheric density change [PDF]
, 2012 Predicting the positions of satellites in Low Earth Orbit (LEO) requires a comprehensive understanding of the dynamic nature of the atmosphere. For objects in LEO the most significant orbit perturbation is atmospheric drag, which is a function of the ...
Saunders, Arrun, Saunders, A.
core
Fuel Consumption and Collision Avoidance Strategy in Multi-static Orbit Formations [PDF]
, 2011 This paper analysesthe fuel consumption of interferometric rader missions employing small satellite formations like, e.g., Cross-track pendulum, Cartwheel, CarPe, or Trinodal Pendulum.
H. Fiedler +5 more
core +1 more source
Standalone GPS L1 C/A Receiver for Lunar Missions
Sensors, 2016 Global Navigation Satellite Systems (GNSSs) were originally introduced to provide positioning and timing services for terrestrial Earth users. However, space users increasingly rely on GNSS for spacecraft navigation and other science applications at ...
Vincenzo Capuano +7 more
doaj +1 more source
A Routing algorithm for low earth orbit satellite networks
, 2016 Cataloged from PDF version of article.
openaire +3 more sources
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Characterization of user mobility in Low Earth Orbit mobile satellite systems
Wireless Networks, 2000 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DEL RE, ENRICO +2 more
openaire +5 more sources