Results 181 to 190 of about 1,235,553 (221)
Some of the next articles are maybe not open access.
Polarimetric-anisotropic decomposition of synthetic aperture radar
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016To explore anisotropic information embedded among sub-aperture SAR images, we propose polarimetric sub-aperture singular value decomposition, where polarimetric and anisotropic features are simultaneously decomposed. The decomposed singular values and left singular vectors are equivalent to eigen-analysis-based polarimetric target decomposition, while ...
Feng Xu 0001, Yongchen Li, Ya-Qiu Jin
openaire +2 more sources
Polarimetric fusion for synthetic aperture radar target classification
Pattern Recognition, 1997Abstract The problem of target classification using Synthetic Aperture Radar (SAR) polarizations is considered from a Bayesian decision point of view. This problem is analogous to the multi-sensor problem. We investigate the optimum design of a data fusion structure given that each classifier makes a target classification decision for each ...
Andrew Hauter +2 more
openaire +1 more source
An internal calibration scheme for polarimetric Synthetic Aperture Radar system
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009Two important aspects of internal calibration of polarimetric Synthetic Aperture Radar (SAR) are discussed, that is, system gain calibration and individual Transmit/Receive Module (TRM) calibration. System gain variation is measured utilizing the internal calibration loop. Dualchannel TRM gain and phase calibration is carried out using Orthogonal Phase
Shuo Wang, Weidong Yu, Haiming Qi
openaire +2 more sources
The simulation study on polarimetric synthetic-aperture radar
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293), 2003The simulation study on polarimetric synthetic-aperture radar (SAR) is presented in this paper. Compared with conventional SAR simulation methods, the approach uses a model of the target with phase information that is required by the polarization synthesis.
null Xiangyang Qi +2 more
openaire +1 more source
Interferometric polarimetric synthetic aperture radar system
SPIE Proceedings, 2001Polarimetric radar interferometry is a compound technique that has shown the ability to extract geophysical parameters from synthetic aperture radar (SAR) images and its usefulness in terrain classification and surface change detection. A three-dimensional image can be constructed by coherence integrating the backscatter data over the measured ...
Zhengshu Zhou +2 more
openaire +1 more source
Spatially Variant Restoration for Polarimetric Synthetic Aperture Radar Imagery
2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006A. spatially variant speckle filter is proposed for multi-look polarimetric synthetic aperture radar (POLSAR) imagery. The central idea is that the filtering is applied only to homogeneous areas based on the scattering properties, while for detected edges, lines and point-like textural features, the original complex covariance matrix of these features ...
Ken Yoong Lee, Timo Rolf Bretschneider
openaire +1 more source
Filtering of polarimetric synthetic aperture radar images: A sequential approach
2012 IEEE International Geoscience and Remote Sensing Symposium, 2012This paper introduces a novel method for filtering polarimetric synthetic aperture radar (POLSAR) imagery data. Unlike most existing filters, the proposed one is freed from using searching windows but implements the filtering in a sequential fashion. Specifically, we propose to use the inverse Wishart distribution as the conjugate prior model for the ...
Yi Cui 0002 +3 more
openaire +1 more source
Oil platform detection by compact polarimetric synthetic aperture radar
2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013We present a innovative physically-based approach to detect oil platforms by using compact polarimetric (CP) synthetic aperture data. We utilize two RADARSAT-2 fine quad-polarization SAR images of Gulf of Mexico to estimate the CP covariance matrix. The resulting CP data is used to reconstruct pseudo quad-polarization covariance matrix.
Biao Zhang 0001 +5 more
openaire +1 more source
Polarization Calibration Technology for Polarimetric Synthetic Aperture Radar
2021SAR calibration is used to establish the exact relationship between image intensity and ground backscattering coefficient, which is the key to realize quantitative remote sensing of SAR. In order to fully utilize the information contained in multi-channel multi-polarization data, quantitatively analyzing the correlation between different channels and ...
Ruliang Yang +5 more
openaire +1 more source
Polarimetric calibration of circularly polarized synthetic aperture radar data
IEEE Transactions on Geoscience and Remote Sensing, 2017Two novel aspects of polarimetric calibration for fully polarimetric imaging radar systems are addressed. First, the radar system model is formulated in the context of two generic transmitter designs, either a single amplifier followed by a high-power switch or a low-power switch followed by two amplifiers.
Paul B. Pincus +3 more
openaire +1 more source