Results 61 to 70 of about 2,142 (216)

Real-Time Water Vapor Maps from a GPS Surface Network: Construction, Validation, and Applications

open access: yes, 2009
In this paper the construction of real-time integrated water vapor (IWV) maps from a surface network of global positioning system (GPS) receivers is presented.
Holleman, I.   +2 more
core   +1 more source

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

open access: yesLaser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan   +7 more
wiley   +1 more source

GPS-Derived zenith tropospheric delay assimilation into numeric atmosphere model [PDF]

open access: yes, 2014
© 2014 SPIE. The total zenith tropospheric delay (ZTD) is an important parameter of the atmosphere and directly or indirectly reflects the weather processes and variations.
Khutorova O.   +3 more
core  

Determination of tropospheric refraction over observation points IRKM (Irkutsk), ULAZ (Ulan-Ude) and BADG (Badary)

open access: yesГеодинамика и тектонофизика, 2018
The article describes the possibility of using the passive satellite measurements of the atmosphere to investigate the vertical patterns of pressure, temperature and relative humidity and simulate the altitude dependence of the refractive index of air ...
M. G. Dembelov   +2 more
doaj   +1 more source

Intercropping mitigates incidence of the oilseed rape insect pest complex

open access: yesPest Management Science, EarlyView.
Intercropping reduces the incidence of the oilseed rape insect pest complex with a significant impact of the direct visual and physical disruption provided by the companion plant. Abstract BACKGROUND Oilseed rape (OSR, Brassica napus) is a major crop requiring numerous phytosanitary treatments.
Laurie Magnin   +3 more
wiley   +1 more source

GPS Zenith Total Delay Estimation in the Mediterranean Area for Climatological and Meteorological Applications

open access: yesJournal of Atmospheric and Oceanic Technology, 2003
Abstract A ground network of global positioning system (GPS) receivers is a powerful source of continuous integrated precipitable water vapor (IPWV) data that can be suitable for weather prediction and climate studies. The technical features of two different GPS data analysis strategies, one for climatological and the other for meteorological ...
R. Pacione, F. Vespe
openaire   +1 more source

Noise characteristics in Zenith Total Delay from homogeneously reprocessed GPS time series [PDF]

open access: yes, 2016
Abstract. Zenith Total Delay (ZTD) time series, derived from the re-processing of Global Positioning System (GPS) data, provide valuable information for the evaluation of global atmospheric reanalysis products such as ERA-Interim. Identifying the correct noise characteristics in the ZTD time series is an important step to assess the "true" magnitude of
Anna Klos   +5 more
openaire   +3 more sources

CLEAR Interference Cancellation in a Wideband Dual‐Channel Receiver for Independent Satellite Multi‐Connectivity Links

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley   +1 more source

High-accuracy zenith delay prediction at optical wavelengths,” Geophysical Res

open access: yes, 2020
[1] A major limitation in accuracy in modern satellite laser ranging is the modeling of atmospheric refraction. Recent improvements in this area include the development of mapping functions to project the atmospheric delay experienced in the zenith ...
V B Mendes, E C Pavlis
core  

Geometric Characterization of LEO–GEO Inter‐Satellite Links for Bidirectional Communications

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Incorporating geosynchronous Earth orbit (GEO) and low Earth orbit (LEO) satellites can extend communication services far beyond the reach of terrestrial infrastructure. A key enabler of such architectures is the establishment of inter‐satellite links (ISLs) between LEOs and GEOs to support bidirectional communications.
Muhammad Furqan   +2 more
wiley   +1 more source

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