Results 101 to 110 of about 1,274 (202)

A smart climatology of evaporation duct height and surface radar propagation in the Indian Ocean [PDF]

, 2007
Surface electromagnetic propagation over the ocean is highly sensitive to near-surface atmospheric variability, particularly the height of the evaporation duct.
Twigg, Katherine L.
core  

Assessing evaporation duct variability in the Eastern Mediterranean Sea in support of radar and radio communications [PDF]

, 2016
Electro-magnetic (EM) propagation is greatly affected by atmospheric conditions. Although this subject has been an active area of research, a comprehensive evaporation ducting study for the Eastern Mediterranean Sea does not exist.
Gürbüz, Süleyman C.
core  

The non-uniformity characteristics of the evaporation duct in the South China Sea based on CLDAS data

Frontiers in Marine Science
The non-uniformity of the evaporation duct has a significant impact on the propagation of electromagnetic waves. Based on the near real-time dataset from the China Meteorological Administration Land Data Assimilation System (CLDAS) and the National ...
Ning Yang, Xiaohai Zou, Luyao Sun, Debin Su, Debin Su, Tao Wang   +5 more
doaj   +1 more source

High-capacity, long-range, over ocean microwave link using the evaporation duct

, 2009
This communication reports the first ever use of the over ocean evaporation duct to implement a high-capacity radio link from the Australian mainland to the Great Barrier Reef (GBR), North Queensland, Australia.
Ruxton, Adam, Woods, Graham S., Gigan, Gilles, Huddlestone-Holmes, Cameron   +3 more
core   +1 more source

Continuous observation of evaporation ducts in Super Typhoon Koinu (202314) using clustered wave gliders: mechanisms and maritime communication implications

Frontiers in Marine Science
Formed by humidity stratification in the marine atmospheric boundary layer, evaporation ducts serve as critical natural channels for maritime over-the-horizon (OTH) wireless communication.
Shuwen Wang, Shuwen Wang, Shuwen Wang, Zikang Zhang, Zikang Zhang, Zikang Zhang, Yang Shi, Yang Shi, Yang Shi, Xiujun Sun, Ying Zhou, Yihang Shu, Yihang Shu, Yihang Shu, Fan Yang, Fan Yang, Hongzhe Zhu, Kunde Yang, Kunde Yang, Kunde Yang   +19 more
doaj   +1 more source

Ray Tracing and Applications to an Evaporation Duct Model Based on Data from Oceanographic Buoy Sensors

, 2019
The two-dimensional ray tracing method allows an easy and fast modeling of tropospheric propagation in the microwave frequency range. A version of this method that determines ray trajectories, amplitudes and delays of the electromagnetic field, as well ...
Leonardo L. Freitas (6514076), Emanoel Costa (6514079)   +1 more
core   +1 more source

Implications of anomalous propagation in the evaporation duct for radars at X and Ku band

, 2003
The radio refractive index of the atmosphere is governed by the combination of atmospheric temperature, pressure and humidity. Over oceans, humidity gradients can cause an effect known as the evaporation duct.
Kerans, Andrew J., Woods, Graham S., Hermann, John A., Kulessa, Andy S.   +3 more
core  

Propagation at 10.6 GHz over along path in the tropical evaporation duct

, 2002
Much work is being undertaken on the characterisation of the evaporation duct above warm tropical oceans in Australia. This work is being carried out jointly by the University of Canberra's Radio Systems Research Group (RSRG), The Defence Science and ...
Kerans, Andrew, Lensson, Erik, Woods, Graham, Kulessa, Andy, French, Graham   +4 more
core   +1 more source

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation. [PDF]

Sensors (Basel), 2023
Wang Y, Zhou T, Xu T, Hu H.
europepmc   +1 more source

Observations of anomalous over the horizon microwave radio propagation inside the tropical maritime evaporation duct in North Queensland, Australia. Part One: normal ducting events

, 2004
The evaporation duct forms over oceans due to rapidly changing humidity profiles immediately above the sea's surface. Evaporation ducts can trap propagating waves leading to increased radar ranges or an increase in interference from remote transmitters. '
Kerans, Andrew, Woods, Graham
core