Results 151 to 160 of about 641,092 (210)

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

Nanophotonics
Baek S, Son H, Park H, Park H, Lee J, Jeong S, Shim JE, Park J, Kim TT.   +8 more
europepmc   +1 more source

Retinal nerve fibre layer thickness is associated with attention and predicts risk states of dementia. [PDF]

Brain Commun
Schroeter ML, Girbardt J, Luck T, Rodriguez FS, Plant GT, Wicklein B, Wirkner K, Engel C, Kynast J, Girbardt C, Wang M, Polyakova M, Hinz A, Witte AV, Kirsten T, Loeffler M, Villringer A, Riedel-Heller SG, Elze T, Rauscher FG.   +19 more
europepmc   +1 more source

On theoretical problems in radar polarimetry

, 1999
openaire   +1 more source

Mueller and Kennaugh matrices in radar polarimetry

IEEE Transactions on Geoscience and Remote Sensing, 1994
This paper is concerned with the notions of the Mueller matrix and the Kennaugh (or Stokes scattering) matrix, that are commonly used in the field of radar polarimetry. Although these two matrices are quite similar, there exists a basic difference between them that seems to have been overlooked by a number of researchers, resulting in a great deal of ...
Guissard, Albert
exaly   +3 more sources

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Imaging radar polarimetry: a review

Proceedings of the IEEE, 1991
Presents a tutorial review of the broad sweep of topics relating to imaging radar polarimetry, ranging from mathematical foundations to hardware and from implementation approaches to signal processing and calibration. The authors examine current developments in sensor technology and implementation for recording polarimetric measurements, and describe ...
J J van Zyl, H A Zebker
exaly   +3 more sources

On foundations of radar polarimetry

IEEE Transactions on Antennas and Propagation, 1986
Polarization aspects of the radar target scattering problem are reexamined. The optimization problem of radar polarimetry is formulated and Kennaugh's method of finding optimal polarizations is modified and extended to nonreciprocal and bistatic cases. Our approach does not necessitate diagonalization of the target scattering operator and therefore, a ...
A. Kostinski, W. Boerner
exaly   +2 more sources

Statistical Aspects of Radar Polarimetry

2004
A comparison between the Kennaugh and the covariance matrix formulation of second- order moments radar and optical polarimetry reveals fundamental relationships between target decompositions and power and variance aspects of radar back scattering and transmission for point and randomly distributed targets.
Ernst, Luneburg, Wolfgang-Martin, Boerner   +1 more
openaire   +1 more source

The Eigenvector-Eigenvalue Identity and Radar Polarimetry

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
Eigenvalues and eigenvectors of the polarimetric covariance or coherency matrices play an integral role either directly or indirectly in the analysis and classification of radar polarimetric data. Since these matrices are hermitian their eigenvalues are real and are found simply as the roots of the characteristic polynomial of these matrices.
openaire   +1 more source

Basic Theory of Radar Polarimetry

2021
This chapter briefly discusses Synthetic Aperture Radar (SAR) imaging principles and the theory of SAR polarimetry. The descriptions of several polarimetric parameters and their expressions are presented in this chapter. SAR imaging principles are introduced, followed by the description of wave and polarimetric scattering concepts. Several polarimetric
Dipankar Mandal, Avik Bhattacharya, Yalamanchili Subrahmanyeswara Rao   +2 more
openaire   +1 more source