Results 11 to 20 of about 2,220,668 (92)
Geosynchronous synthetic aperture radar: design and applications [PDF]
, 2009 Synthetic Aperture Radar (SAR) imaging from geosynchronous orbit has significant potential advantages over conventional low-Earth orbit (LEO) radars, but also challenges to overcome.
Bruno, Davide
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IET Radar, Sonar &Navigation, Volume 17, Issue 9, Page 1391-1404, September 2023., 2023 The 150‐MHz airborne ice‐sounding PASIN2 synthetic‐aperture‐radar is presented, to map the basal 3D‐topography beneath the Antarctic glaciers. The directional ambiguities are resolved by statistically exploiting the spatially distributed array of antennas.
Álvaro Arenas‐Pingarrón +4 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 17, Issue 2, Page 153-178, February 2023., 2023 Abstract A multi‐function radar is designed to perform disparate functions, such as surveillance, tracking, fire control, amongst others, within a limited resource (time, frequency, and energy) budget. A radar resource management (RRM) module within a radar system makes decisions on prioritisation, parameter selection, and scheduling of associated ...
Umair Sajid Hashmi +4 more
wiley +1 more source
Moving target detection method based on CUR‐RPCA for missing array elements
IET Radar, Sonar &Navigation, Volume 16, Issue 12, Page 2089-2103, December 2022., 2022 Abstract Moving target detection performance is seriously affected by missing array elements for multichannel synthetic aperture radar (Multi‐SAR) systems. Meanwhile, there is a contradiction between the accuracy of data recovery and the computational burden in traditional methods.
Jianli Shi +4 more
wiley +1 more source
Geophysical Research Letters, Volume 48, Issue 20, 28 October 2021., 2021 Abstract Migration of subglacial water underneath thick Antarctic ice is difficult to observe directly but is known to influence ice flow dynamics. Here, we analyze a 6‐year time series of displacement maps from differential Sentinel‐1 SAR interferometry (DInSAR) in the upstream region of Jutulstraumen Glacier. Our results reveal short‐term (between 12
Niklas Neckel +4 more
wiley +1 more source
Earth Surface Processes and Landforms, Volume 46, Issue 13, Page 2728-2745, October 2021., 2021 Airborne ice‐penetrating radar data reveal the evolution of the subglacial morphology of the Jutulstraumen Glacier drainage system in western Dronning Maud Land. We identify various geomorphological patterns that are related to different stages of subglacial erosion and allow us to reconstruct the temporal sequence by which ice flow modified the ...
Steven Franke +9 more
wiley +1 more source
Synthetic aperture radar remote sensing for landfill monitoring [PDF]
, 2007 Despite today’s intensive efforts directed at the recycling and recovery of solid wastes, the controlled disposal of refuse into land remains an important and necessary means of effective waste management.
Ottavianelli, Giuseppe
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Journal of Geophysical Research: Earth Surface, Volume 126, Issue 5, May 2021., 2021 Abstract In airborne radargrams, undulating periodic patterns in amplitude that overprint traditional radiostratigraphic layering are occasionally observed, however, they have yet to be analyzed from a geophysical or glaciological perspective. We present evidence supported by theory that these depth‐periodic patterns are consistent with a modulation of
T. J. Young +6 more
wiley +1 more source
Nondestructive Testing for Corrosion Evaluation of Metal under Coating
Journal of Sensors, Volume 2021, Issue 1, 2021., 2021 The use of steel has grown rapidly over the past decades. However, corrosion under coating detection still presents challenges for nondestructive testing (NDT) techniques. One of such challenges is the lift‐off introduced by complex structures. Inaccessibility due to structure leads corrosion to be undetected, which can lead to catastrophic failure ...
Ruikun Wu +5 more
wiley +1 more source
Multidimensional Waveform Encoding for Synthetic Aperture Radar Remote Sensing [PDF]
, 2007 This paper introduces and analyses the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Moreira, Alberto +5 more
core +1 more source