Results 111 to 120 of about 7,241 (305)

Rain Attenuation Study at Ku-Band over Earth-Space Path in South Korea

Advances in Astronomy, 2019
Rain attenuation measurement techniques are studied with appropriate prediction of rain attenuation at Ku-band for Koreasat 6. This is accomplished by the establishment of experimental setup in Mokdong at 12.25 GHz link.
Sujan Shrestha, Dong-You Choi
doaj   +1 more source

On the frequency scaling of rain attenuation for space communications [PDF]

, 2009
Gremont, Boris, Boris C. Gremont
core   +1 more source

Propagation Effects in Satellite mounted Radar Remote Sensing

, 2009
—Active microwave SAR imaging of the Earth’s surface is commonly considered to be of all weather capability. However, as the operating frequencies of SAR-systems are increasing, visible image distortions due to heavy precipitation in SAR-images may ...
Danklmayer, Andreas
core  

Frequency scaling of rain attenuation [PDF]

, 2007
The most fundamental obstacle encountered in designing communication system at millimeter waves is attenuation due to rain especially at frequencies above 10GHz. Rain attenuation, however, increases approximately as the square of frequency.
Ahmad, Sahadah
core  

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

Coupling Water Purification and Carbon Sequestration at Various Spatial Scales From Supply and Demand Perspective

Land Degradation &Development, EarlyView.
ABSTRACT Balancing ecosystem‐service supply and demand is central to understanding both the natural and social dimensions of ecosystem services and to enhancing human well‐beings. Concurrently, collaborative efforts are underway to improve multiple ecosystem services, including the promotion of carbon neutrality and water purification (WP) within basin
Jing Cheng, Mingyang Ding, Zhenya Zhu, Xinping Luo, Xin Huang, Chunbo Huang   +5 more
wiley   +1 more source

Rain attenuation statistics over millimeter wave bands in South Korea

, 2017
Rain induced degradations are significant for terrestrial microwave links operating at frequencies higher than 10GHz. Paper presents analyses done on rain attenuation and rainfall data for three years between 2013 till 2015, in 3.2km experimental link of
Choi, Dong-You, Shrestha, Sujan
core   +1 more source

Carbon, Nitrogen, and Corresponding Stable Isotope Signatures Reveal Channel Banks as Major Sediment Sources in a Tropical Agricultural Watershed

Land Degradation &Development, EarlyView.
ABSTRACT Uncertainties about the applicability of δ13C and δ15N as tracers of sediment sources in tropical river basins highlight the need for more in‐depth investigations of these isotopes. This study therefore assessed the effectiveness of δ13C and δ15N signatures in discriminating sediment sources in an agricultural catchment in Northeast Brazil ...
Fábio Farias Amorim, Yuri Jacques Agra Bezerra da Silva, Rennan Cabral Nascimento, Ygor Jacques Agra Bezerra da Silva, Angelo Jamil Maia, Tales Tiecher, Jean Paolo Gomes Minella, Yusheng Zhang, Hari Ram Upadhayay, Simon Pulley, Adrian L. Collins   +10 more
wiley   +1 more source

Rain rate and rain attenuation prediction for satellite communication

, 2008
Rain rate and rain attenuation predictions are one of the vital steps to be considered when analyzing a microwave satellite communication links at the Ku and Ka bands.
S. K Sarkar, J. S Ojo, M. O Ajewole
core