Results 21 to 30 of about 241,915 (134)

Radiometric calibration of a non-imaging airborne spectrometer to measure the Greenland ice sheet surface [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Methods to radiometrically calibrate a non-imaging airborne visible-to-shortwave infrared (VSWIR) spectrometer to measure the Greenland ice sheet surface are presented.
C. J. Crawford   +18 more
doaj   +1 more source

Automatic Extraction of High-Voltage Bundle Subconductors Using Airborne LiDAR Data

open access: yesRemote Sensing, 2020
Overhead high-voltage conductors are the chief components of power lines and their safety has a strong influence on social and daily life. In the recent decade, the airborne laser scanning (ALS) technique has been widely used to capture the three ...
Nosheen Munir   +2 more
doaj   +1 more source

Modelling natural electromagnetic interference in man-made conductors for space weather applications [PDF]

open access: yesAnnales Geophysicae, 2016
Power transmission lines above the ground, cables and pipelines in the ground and under the sea, and in general all man-made long grounded conductors are exposed to the variations of the natural electromagnetic field.
L. Trichtchenko
doaj   +1 more source

A Novel Thermo-Mechanical Model to Assess the Dynamic Thermal Rating of Multi-Span Overhead Transmission Lines

open access: yesPeriodica Polytechnica Electrical Engineering and Computer Science, 2015
The power flow limits of transmission lines are set in order to ensure a given level of security to the electric system; their improper definition can reduce system reliability, increase the curtailment of renewable energy sources or create barriers to the free trading of energy. Unlike the previous literature, the Dynamic Thermal Rating procedure here
POLI, DAVIDE, PELACCHI, PAOLO
openaire   +3 more sources

Phase-coherent lightwave communications with frequency combs [PDF]

open access: yes, 2019
Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A.   +7 more
core   +2 more sources

Fast Structuring of Radio Networks for Multi-Message Communications [PDF]

open access: yes, 2013
We introduce collision free layerings as a powerful way to structure radio networks. These layerings can replace hard-to-compute BFS-trees in many contexts while having an efficient randomized distributed construction. We demonstrate their versatility by
B. Chlebus   +9 more
core   +2 more sources

Evans function and Fredholm determinants [PDF]

open access: yes, 2014
We explore the relationship between the Evans function, transmission coefficient and Fredholm determinant for systems of first order linear differential operators on the real line.
Karambal, Issa, Malham, Simon J. A
core   +3 more sources

On Achievable Rates for Long-Haul Fiber-Optic Communications [PDF]

open access: yes, 2015
Lower bounds on mutual information (MI) of long-haul optical fiber systems for hard-decision and soft-decision decoding are studied. Ready-to-use expressions to calculate the MI are presented.
Alvarado, Alex   +3 more
core   +3 more sources

Coupling Vibration Characteristics and Wind-Induced Responses of Large-Span Transmission Lines Under Multi-Dimensional Wind

open access: yesBuildings
Transmission lines, crucial for power and urban infrastructure, are vulnerable to wind damage; this paper addresses research gaps in tower-line systems under multi-dimensional wind loads and aerodynamic damping.
Wenping Xie   +3 more
doaj   +1 more source

Galloping Performance of Transmission Line System Aeroelastic Model with Rime Through Wind-Tunnel Tests

open access: yesEnergies
This study presents an experimental investigation for the galloping performance of the transmission line system with rime under wind excitation. A full aeroelastic model wind-tunnel test is conducted to investigate the dynamic response of a two-bundled ...
Mingguan Zhao   +5 more
doaj   +1 more source

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