Results 21 to 30 of about 1,334 (222)

Estimation of the Degree of Polarization for Hybrid/Compact and Linear Dual-Pol SAR Intensity Images: Principles and Applications [PDF]

open access: yes, 2013
Analysis and comparison of linear and hybrid/compact dual-polarization (dual-pol) synthetic aperture radar (SAR) imagery have gained a wholly new importance in the last few years, in particular, with the advent of new spaceborne SARs such as the Japanese
Shirvany, Reza   +2 more
core   +1 more source

Interpretation of observed microwave signatures from ground dual polarization radar and space multi-frequency radiometer for the 2011 Grímsvötn volcanic eruption [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
The important role played by ground-based microwave weather radars for the monitoring of volcanic ash clouds has been recently demonstrated. The potential of microwaves from satellite passive and ground-based active sensors to estimate near-source ...
M. Montopoli   +4 more
doaj   +1 more source

On the Gersgorin Theorem Applied To Radar Polarimetry [PDF]

open access: yesPIERS Online, 2007
This contribution is concerned with the mathematical formulation and theoretical background of the Ger‚sgorin theory in the context of Radar Polarimetry. Named after its founder Semian A. Ger‚sgorin the Ger‚sgorin theorem basically states that there are certain regions in the complex plane that can be derived from any n £ n complex matrix by rather ...
Lüneburg, Ernst   +2 more
openaire   +2 more sources

Ship and Oil-Spill Detection Using the Degree of Polarization in Linear and Hybrid/Compact Dual-Pol SAR [PDF]

open access: yes, 2012
Monitoring and detection of ships and oil spills using synthetic aperture radar (SAR) have received a considerable attention over the past few years, notably due to the wide area coverage and day and night all-weather capabilities of SAR systems.
Shirvany, Reza   +2 more
core   +1 more source

Estimation of Dual Polarization Weather Radar Variables

open access: yesAl-Mustansiriyah Journal of Science, 2018
Dual polarization weather radar has now become a widely used as instrument in meteorological offices around the world because of its capability in distinguishing different precipitation type and in improving the accuracy of quantitative precipitation ...
Dalia A. Mahmood
doaj   +1 more source

Graphene-based metasurface: dynamic optical control in ultrathin flat optics. [PDF]

open access: yesNanophotonics
Abstract Graphene hosts massless Dirac fermions owing to its linear electronic band structure. This distinctive feature underpins its extraordinary electronic properties, correlating to strong light–matter interactions on an extreme subwavelength scale. Over the past decade, intensive investigations have transitioned from fundamental graphene’s optical
Baek S   +8 more
europepmc   +2 more sources

Review of Radar Polarization Information Acquisition and Polarimetric Signal Processing Techniques

open access: yesLeida xuebao, 2016
As one of the topical research area in the field of radar, polarimetric signal processing techniques gradually receive the attention of scholars worldwide and have been widely applied in various fields.
Zhao Chunlei   +4 more
doaj   +1 more source

Analysis of Dual- and Full-Circular Polarimetric SAR Modes for Rice Phenology Monitoring: An Experimental Investigation through Ground-Based Measurements

open access: yesApplied Sciences, 2017
Circularly polarized synthetic aperture radar (CP-SAR) is known to be insensitive to polarization mismatch losses caused by the Faraday rotation effect and antenna misalignment.
Yuta Izumi   +4 more
doaj   +1 more source

Brief communication: Reduced bandwidth improves the depth limit of the radar coherence method for detecting ice crystal fabric asymmetry [PDF]

open access: yesThe Cryosphere
Ice crystal orientation fabric strongly affects the viscous deformation of glacier ice. A popular technique to investigate ice fabric is radar polarimetry, often analysed using the coherence method.
O. Zeising   +4 more
doaj   +1 more source

An Assessment of Simulated Compact Polarimetric SAR Data for Wetland Classification Using Random Forest Algorithm

open access: yesCanadian Journal of Remote Sensing, 2017
Synthetic aperture radar (SAR) compact polarimetry (CP) systems are of great interest for large area monitoring because of their ability to acquire data in a wider swath compared to full polarimetry (FP) systems and a significant improvement in ...
Masoud Mahdianpari   +3 more
doaj   +1 more source

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