Results 21 to 30 of about 7,886 (195)

Performance of SAR Polarimetric Calibration Using Hybrid Corner Reflectors: Numerical Simulations and Experimental Measurements

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In this article, we devise a polarimetric calibration method utilizing only three types of calibration targets, i.e., trihedral, dihedral, and a 22.5°-rotated dihedral corner reflectors and requiring no assumptions on the scene statistics.
Suyun Wang, Kun-Shan Chen, Motoyuki Sato
doaj   +1 more source

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.
Chabert, Marie   +2 more
core   +3 more sources

Polarimetric Decomposition Analysis of ALOS PALSAR Observation Data before and after a Landslide Event

open access: yesRemote Sensing, 2012
Radar scattering mechanisms over landslide areas were studied using representative full polarimetric parameters: Freeman–Durden decomposition, and eigenvalue–eigenvector decomposition.
Chinatsu Yonezawa   +2 more
doaj   +1 more source

A type of polarimetric parameter for evaluating the reliability of model-based decomposition result and its application

open access: yesInternational Journal of Digital Earth, 2023
The reliability of the model-based decomposition result, which is seldom investigated, is a key factor in determining whether decomposition parameters can be effectively applied to polarimetric synthetic aperture radar (PolSAR) applications.
Wentao Han   +3 more
doaj   +1 more source

General Five-Component Scattering Power Decomposition with Unitary Transformation (G5U) of Coherency Matrix

open access: yesRemote Sensing, 2023
The polarimetric synthetic aperture radar (PolSAR) provides us with a two-by-two scattering matrix data set. The ensemble averaged coherency matrix in an imaging window derived using a scattering matrix has all non-zero elements in its three-by-three ...
Rashmi Malik   +3 more
doaj   +1 more source

Advances in mapping ice-free surfaces within the Northern Antarctic peninsula region using polarimetric RADARSAT-2 data [PDF]

open access: yes, 2018
Ice-free areas within the Northern Antarctic Peninsula region are of interest for studying changes occurring to surface covers, including those related to glacial coverage, raised beach deposits and periglacial processes and permafrost. The objective
Guillaso, Stephane   +5 more
core   +1 more source

Improved General Polarimetric Model-Based Decomposition for Coherency Matrix

open access: yesRemote Sensing, 2023
A representative general polarimetric model-based decomposition framework was proposed by Chen et al., which implements a simultaneous full-parameter inversion by using complete polarimetric information and solves several limitations in previous ...
Yongzhen Li   +5 more
doaj   +1 more source

RISAT-1 Compact Polarimetric Calibration and Decomposition [PDF]

open access: yes3rd International Electronic Conference on Remote Sensing, 2019
Indian Space Research Organisation’s Radar Imaging Satellite (RISAT) -1 was the first Synthetic Aperture Radar (SAR) satellite equipped with the compact polarimetric (CP) mode for data acquisition. To exploit the advantages offered by the CP mode, the datasets need to be polarimetrically calibrated.
Arun Babu, Shashi Kumar, Shefali Agrawal
openaire   +1 more source

Visualisation and interpretation of PolSAR data based on polarimetric coherence

open access: yesThe Journal of Engineering, 2019
Polarimetric coherence strongly relates to the target scattering characteristics. Coherences of different second-order statistics show different advantages in target discrimination in specific correspondence to physical scattering mechanism.
Liting Liang   +3 more
doaj   +1 more source

Optimum graph cuts for pruning binary partition trees of polarimetric SAR images [PDF]

open access: yes, 2016
This paper investigates several optimum graph-cut techniques for pruning binary partition trees (BPTs) and their usefulness for the low-level processing of polarimetric synthetic aperture radar (PolSAR) images.
Foucher, Samuel   +1 more
core   +2 more sources

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