Results 71 to 80 of about 1,700,493 (251)
A Hierarchical Extension of General Four-Component Scattering Power Decomposition
Remote Sensing, 2017 The overestimation of volume scattering (OVS) is an intrinsic drawback in model-based polarimetric synthetic aperture radar (PolSAR) target decomposition.
Sinong Quan +4 more
doaj +1 more source
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Feature selection (FS) is a critical preprocessing approach for enhancing the quality of feature sets in various real‐world applications. Due to diverse relationships among features in high‐dimensional data sets, various features exhibit differing levels of importance and correlation with the target, which makes it challenging to effectively ...
Jiankai Xue, Huihui Tong, Zhengkai Wang
wiley +1 more source
Compressive Sensing for Ground Based Synthetic Aperture Radar
Remote Sensing, 2018 Compressive sensing (CS) is a recent technique that promises to dramatically speed up the radar acquisition. Previous works have already tested CS for ground-based synthetic aperture radar (GBSAR) performing preliminary simulations or carrying out ...
Massimiliano Pieraccini +2 more
doaj +1 more source
Form and structure factors with complex scattering vector
Journal of Applied Crystallography, EarlyView.Under grazing incidence, form and structure factors must be evaluated for complex scattering vectors, which can be done by analytic continuation.In condensed‐matter scattering, especially under grazing incidence, complex scattering vectors account for absorption and evanescent waves.
Joachim Wuttke
wiley +1 more source
The Radiometric Measurement Quantity for SAR Images [PDF]
, 2013 A Synthetic Aperture Radar (SAR) system measures among other quantities the terrain radar reflectivity. After image calibration, the pixel intensities are commonly expressed in terms of radar cross sections (for point targets) or as backscatter ...
Döring, Björn, Schwerdt, Marco
core +1 more source
WAH‐i: Optimising microphone array geometry for customised localisation accuracy
Methods in Ecology and Evolution, EarlyView.Abstract Accurate spatial localisation of free‐flying echolocating bats is foundational for resolving fine‐scale flight and echolocation behaviour, prey interception and spatial decision‐making in natural environments. Acoustic localisation using microphone arrays is widely employed for this purpose, yet array geometries in field studies are typically ...
Ravi Umadi
wiley +1 more source
Drew Rothrock's Fundamental Contributions to Arctic Science
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract David Andrew (Drew) Rothrock III lived during a period of vigorous scientific research in the Earth Sciences, from the International Geophysical Year to the era of satellites and high‐speed computer modeling. Drew made fundamental contributions to Arctic science, helping to lay the theoretical foundations for modeling the movement and ...
Harry L. Stern +4 more
wiley +1 more source
Spaceborne Radar Technologies for Earth Remote Sensing [PDF]
, 2007 Synthetic Aperture Radar (SAR) is an indispensable source of information in earth observation since SAR is the only spaceborne sensor that has highresolution, all-weather and day-and-night imaging capability.
Moreira, Alberto
core
Performance Investigation on the High-Resolution Wide-Swath SAR System Operating in Stripmap Quad-Pol and Ultra-Wide Scansar Mode [PDF]
, 2011 The High-Resolution Wide-Swath (HRWS) is the spaceborne Synthetic Aperture Radar system, promoted by the German Aerospace Centre, conceived to obtain simultaneously high spatial resolution and width swaths.
Bordoni, Federica +5 more
core +1 more source
Coherent Performance Analysis of the HJ-1-C Synthetic Aperture Radar
Leida xuebao, 2014 Synthetic Aperture Radar (SAR) is a coherent imaging radar. Hence, coherence is critical in SAR imaging. In a coherent system, several sources can degrade performance.
Li Hai-ying +3 more
doaj +1 more source