Results 141 to 150 of about 24,143,953 (388)

Advanced space communications architecture study. Volume 1: Executive summary [PDF]

open access: yes
The technical feasibility and economic viability of satellite system architectures that are suitable for Customer Premise Service (CPS) communications is investigated.
Hadinger, Peter J., Horstein, Michael
core   +1 more source

Remote platform power conserving system [PDF]

open access: yes, 1974
A system is described where an unattended receiver and transmitter equipped data collection platform is interrogated by a substantially polar orbiting satellite.
Kurvin, C. W.
core   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

A Minimal Solution Estimating the Position of Cameras with Unknown Focal Length with IMU Assistance

open access: yesDrones
Drones are typically built with integrated cameras and inertial measurement units (IMUs). It is crucial to achieve drone attitude control through relative pose estimation using cameras. IMU drift can be ignored over short periods.
Kang Yan   +4 more
doaj   +1 more source

An Intelligent Framework for Cyber-Physical Satellite System and IoT-Aided Aerial Vehicle Security Threat Detection. [PDF]

open access: yesSensors (Basel), 2023
Alturki N   +7 more
europepmc   +1 more source

Satellite monitoring systems

open access: yesEos, Transactions American Geophysical Union, 1979
A circular describing satellite telemetry systems that can collect and transmit environmental data from remote regions of the world to regional resource information centers has been published by the U.S. Geological Survey.The 21‐page circular attempts to answer the most common questions asked about various satellite data collection systems and ...
openaire   +1 more source

SDI satellite autonomy using AI and Ada [PDF]

open access: yes
The use of Artificial Intelligence (AI) and the programming language Ada to help a satellite recover from selected failures that could lead to mission failure are described. An unmanned satellite will have a separate AI subsystem running in parallel with
Fiala, Harvey E.
core   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

open access: yesAdvanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang   +9 more
wiley   +1 more source

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