Results 51 to 60 of about 6,415,065 (280)

A simulation of the single scan accuracy of a two-dimensional pulsed surveillance radar [PDF]

open access: yes, 1991
Bibliography: leaves 194-198.The following dissertation considers the single-scan two-dimensional positional accuracy of a pulsed surveillance radar. The theoretical aspects to the positional accuracy are considered and a generalized analytical approach ...
Bras, Johan J
core   +1 more source

Sea Surface Wind Retrievals from SIR-C/X-SAR Data: A Revisit

open access: yesRemote Sensing, 2015
The Geophysical Model Function (GMF) XMOD1 provides a linear algorithm for sea surface wind field retrievals for the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR).
Yongzheng Ren   +2 more
doaj   +1 more source

ANALYTICAL FORMULAE FOR RADAR CROSS SECTION OF FLAT PLATES IN NEAR FIELD AND NORMAL INCIDENCE [PDF]

open access: yesProgress In Electromagnetics Research B, 2008
Radar Cross Section is most of the time defined in far field. In that case, RCS is totally independent of the range between the radar and the target. However, in several kinds of military scenario, it can be more realistic to deal with the target nearfield scattering characteristics.
Philippe Pouliguen   +4 more
openaire   +1 more source

The radar signature of the Wind Lens: a less disruptive wind turbine? [PDF]

open access: yes, 2012
We study the radar signature of a new type of wind turbine, named the Wind Lens. This design includes a flanged shroud around the turbine which concentrates the wind flow past the turbine blades and hence improves the efficiency.
H. Griffiths   +9 more
core   +1 more source

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

open access: yesAdvanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na   +10 more
wiley   +1 more source

A new interpretation of multifrequency/multipolarization radar signatures of the Gulf Stream front

open access: yes, 1999
Radar signatures which are observed on SIR-C/X-SAR multifrequency/multipolarization synthetic aperture radar images of the Gulf Stream off the U.S. east coast are compared with results of simulations with a numerical radar imaging model. Based on in situ
Ufermann, S., Romeiser, R.
core   +2 more sources

Sea Ice Detection Method Using the Dependence of the Radar Cross-Section on the Incidence Angle

open access: yesRemote Sensing
The method for sea ice detection using the data from the Dual-frequency Precipitation Radar (DPR) onboard the Global Precipitation Measurement (GPM) satellite data is suggested. The approach is based on the analysis of the shape of normalized radar cross-
Maria Panfilova, Vladimir Karaev
doaj   +1 more source

Validation of the Effective Resolution of SMAP Enhanced Resolution Backscatter Products

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
NASA's Soil Moisture Active Passive (SMAP) mission originally included both passive and active L-band measurement capabilities. It was the first satellite instrument to provide global L-band radar observations of normalized radar cross section ...
David G. Long, Julie Z. Miller
doaj   +1 more source

Introducing Equivalent Radar Cross Section – A First Step Toward new Radiometric Requirement Definitions [PDF]

open access: yes, 2014
Stringent radiometric SAR system requirements often significantly shape the design and cost of modern SAR systems. Yet the wording in current requirement documents is ambiguous, and a diligent conformance assessment at the end of project phases currently
Döring, Björn, Schwerdt, Marco
core  

UCST‐Driven Shape Morphing in Digital Light Processing 4D‐Printed Hydrogels

open access: yesAdvanced Materials Technologies, EarlyView.
A DLP‐printable UCST hydrogel based on poly(acrylic acid‐co‐acrylamide) enables reversible thermally induced expansion and 4D shape morphing. Rational control of composition, porosity, and multimaterial architecture enables predictable 4D shape morphing through differential swelling and localized actuation, opening new opportunities for high‐resolution
Fato Niang   +2 more
wiley   +1 more source

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