Frontiers in Marine ScienceThe evaporation duct is a critical factor in maritime electromagnetic wave propagation. It exhibits significant spatiotemporal variability influenced by regional meteorological dynamics.
Chongyang Feng +6 more
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An artificial neural network predictor for tropospheric surface duct phenomena [PDF]
, 2007 International audienceIn this work, an artificial neural network (ANN) model is developed and used to predict the presence of ducting phenomena for a specific time, taking into account ground values of atmospheric pressure, relative humidity and ...
Dimou, I. N. +3 more
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RETRIEVING EVAPORATION DUCT HEIGHTS FROM RADAR SEA CLUTTER USING PARTICLE SWARM OPTIMIZATION (PSO) ALGORITHM [PDF]
Progress In Electromagnetics Research M, 2009 Particle Swarm Optimization algorithm (PSO) is a pop- ular stochastic searching optimization algorithm to solve complicated optimization problems. The approach of retrieving duct parameters from the sea-surface re∞ected radar clutter is also known as Refrac- tivity From Clutter (RFC) technique.
Bo Wang +3 more
openaire +1 more source
Using Vertically Separated MIMO in Ship-to-Ship Communications
IEEE Access, 2020 It is well established that the performance of communication systems is improved when deploying multiple antennas at one or both of the transmit/receive sides; and the amount of the gained improvement depends on the level of multipath richness of the ...
Ahmed Abdelmoaty +4 more
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Technical note: formation of airborne ice crystals in a wall independent reactor (WIR) under atmospheric conditions [PDF]
, 2008 Both, gas and particle scavenging contribute to the transport of organic compounds by ice crystals in the troposphere. To simulate these processes an experimental setup was developed to form airborne ice crystals under atmospheric conditions. Experiments
Fries, Elke +6 more
core
Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD [PDF]
, 2014 Moisture-related damage is an important issue when looking at the performance of building envelopes. In order to accurately predict the moisture behaviour of building components, building designers can resort to Heat, Air and Moisture (HAM) models.
De Paepe, Michel +4 more
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Advanced wet-dry cooling tower concept [PDF]
, 1977 Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed.
Bentley, Jeffrey +4 more
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Challenges in the development of the orbiter active thermal control subsystem [PDF]
A number of major challenges were faced in the design and development of the Orbiter Active Thermal Control Subsystem (ATCS). At the system level, the initial challenges were to define an approach that would interface dual Freon coolant loops with ...
Nason, J. R. +2 more
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Assurance of lubricant supply in wet-lubricated space bearings [PDF]
, 1976 Conventional lubrication techniques appear to be satisfactory, but rigorous proof of meeting a ten-year life requirement is lacking. One approach provides additional lubricant only when commanded from ground control, while the other passively augments ...
Glassow, F. A.
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Validation of atmospheric evaporation duct in the eastern Indian Ocean
Frontiers in Earth ScienceAn atmospheric duct is an anomalous atmospheric structural phenomenon that causes trap refraction in the troposphere to change the propagation paths and ranges of electromagnetic waves, thereby increasing the detection distances of radar and other ...
Zhe Qi +6 more
doaj +1 more source