Impacts of future land use and land cover change on mid-21st-century surface ozone air quality: distinguishing between the biogeophysical and biogeochemical effects [PDF]
Atmospheric Chemistry and Physics, 2020 Surface ozone (O3) is an important air pollutant and greenhouse gas. Land use and land cover is one of the critical factors influencing ozone, in addition to anthropogenic emissions and climate.
L. Wang +11 more
doaj +1 more source
Optimal Design of the Reflector Antenna to Improve Performance of C-Band Quad-Pol ScanSAR Systems [PDF]
Journal of Electromagnetic Engineering and Science, 2020 The performance of synthetic aperture radar (SAR) antenna determines the quality of images obtained from the spaceborne SAR system, and thus, SAR antenna should be designed to satisfy the target performance of SAR system.
Jung-Hwan Lim +5 more
doaj +1 more source
Global Positioning System interferometric reflectometry (GPS-IR) measurements of ground surface elevation changes in permafrost areas in northern Canada [PDF]
The Cryosphere, 2020 Global Positioning System interferometric reflectometry (GPS-IR) is a relatively new technique which uses reflected GPS signals to measure surface elevation changes to study frozen-ground dynamics.
J. Zhang, L. Liu, Y. Hu
doaj +1 more source
Method of Range Ambiguity Suppression Combining Sparse Reconstruction and Matched Filtering
Leida xuebao, 2022 To a certain extent, SAR images are affected by range ambiguity due to antenna sidelobe characteristics and pulse operating system. The work of range ambiguity suppression focuses on SAR system design and signal processing.
Meng QI +5 more
doaj +1 more source
SAR++: a multi-channel scalable and reconfigurable SAR system [PDF]
IEEE International Geoscience and Remote Sensing Symposium, 2003 SAR++ is a technology program aiming at developing know-how and technology needed to design the next generation civilian SAR systems. Technology has reached a state, which allows major parts of the digital subsystem to be built using custom-off-the-shelf (COTS) components.
Høeg, Flemming, Christensen, Erik Lintz
openaire +3 more sources
Remote Sensing, 2021 Quadrature-polarimetric synthetic aperture radar (quad-pol SAR) has extensive applications, including climate zones classification, extraction of surface roughness, soil moisture mapping, moving target indication, and rice mapping.
Yanyan Zhang +5 more
doaj +1 more source
UAV-Based Bistatic SAR-Imaging Using a Stationary Repeater
IEEE Journal of Microwaves, 2023 Synthetic aperture radar (SAR) is an established technique for high-resolution radar imaging relying on the ego-motion of the radar. The long coherent integration time of the radar in conjunction with a linear or circular trajectory enables the ...
Alexander Grathwohl +4 more
doaj +1 more source
Design and analysis of a 3-DOF planar micromanipulation stage with large rotational displacement for micromanipulation system [PDF]
Mechanical Sciences, 2017 Flexure-based mechanisms have been widely used for scanning tunneling microscopy, nanoimprint lithography, fast servo tool system and micro/nano manipulation.
B. Ding +6 more
doaj +1 more source
Effect of inorganic-to-organic mass ratio on the heterogeneous OH reaction rates of erythritol: implications for atmospheric chemical stability of 2-methyltetrols [PDF]
Atmospheric Chemistry and Physics, 2020 The 2-methyltetrols have been widely chosen as chemical tracers for isoprene-derived secondary organic aerosols. While they are often assumed to be relatively unreactive, a laboratory study reported that pure erythritol particles (an analog of 2 ...
R. Xu +8 more
doaj +1 more source
SARMV3D-1.0: Synthetic Aperture Radar Microwave Vision 3D Imaging Dataset
Leida xuebao, 2021 Three-dimensional (3D) imaging is one of the leading trends in the development of Synthetic Aperture Radar (SAR) technology. The current SAR 3D imaging system mainly includes tomography and array interferometry, both with drawbacks of either long ...
Xiaolan QIU +10 more
doaj +1 more source