Journal ArticleDOI
Effects of magneto-ionic propagation on the polarization scattering matrix
S.H. Bickel,R.H.T. Bates +1 more
- Vol. 53, Iss: 8, pp 1089-1091
TLDR
In this paper, a matrix representation for magneto-ionic propagation is employed in order to facilitate the determination of the effects of magnetoionic propagation on the polarization scattering matrix of an arbitrary, monostatic radar target.Abstract:
Magneto-ionic propagation effects are considered at radio frequencies that are sufficiently high so that there is negligible physical separation between the ordinary and extraordinary propagation paths. It is recognized that the sensible magneto-ionic propagation effects are birefringence and Faraday rotation. A matrix representation for magneto-ionic propagation is employed in order to facilitate the determination of the effects of magneto-ionic propagation on the polarization scattering matrix of an arbitrary, monostatic radar target. It is shown that the propagation path must be calibrated with a known, four-way symmetric target when both birefringence and Faraday rotation are present, if it is desired to eliminate the effects of magneto-ionic propagation. However, the determinant of the polarization scattering matrix and the trace of the power scattering matrix are, in general, unaffected by magneto-ionic propagation. If birefringence is absent, then even if the radar target is arbitrary and unknown, the effects of Faraday rotation can be accounted for in a particularly simple manner if the scattering matrix is referred to circular polarization.read more
Citations
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Journal ArticleDOI
The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle
T. Le Toan,Shaun Quegan,Malcolm Davidson,Heiko Balzter,Philippe Paillou,Konstantinos Papathanassiou,S. Plummer,Fabio Rocca,Sassan Saatchi,Herman H. Shugart,Lars M. H. Ulander +10 more
TL;DR: In this article, a P-band polarimetric SAR with interferometric capability is used to measure the magnitude and distribution of forest biomass globally to improve resource assessment, carbon accounting and carbon models, and to monitor and quantify changes in terrestrial forest biomass.
Journal ArticleDOI
Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics
TL;DR: A short review is presented on the recent trend and development of SAR and related techniques with selected topics, including the fields of applications, specifications of airborne and spaceborne SARs, and information contents in and interpretations of amplitude data, interferometric SAR (InSar) data, and polarimetric SAR (PolSAR) data.
Journal ArticleDOI
Calibration of linearly polarized polarimetric SAR data subject to Faraday rotation
TL;DR: The approach described in this paper is relevant for future L-band spaceborne SARs and removes one key obstacle to the deployment of even longer wavelength SARs in Earth orbit.
Journal ArticleDOI
Land cover type and biomass classification using AirSAR data for evaluation of monitoring scenarios in the Colombian Amazon
D.H. Hoekman,M.J. Quiriones +1 more
TL;DR: The results clearly indicate how SAR systems may be designed to accurately monitor processes of deforestation, land and forest degradation, and secondary forest regrowth in tropical rain forest areas.
References
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Journal ArticleDOI
Radar Polarization Power Scattering Matrix
TL;DR: In this article, the polarization power scattering matrix (PPSM) is introduced and its relation to the scattering matrix is discussed, where the power matrix gives the total power backscattered from the target for any transmitted polarization.
Journal ArticleDOI
Techniques for Handling Elliptically Polarized Waves with Special Reference to Antennas: Part I - Transmission between Elliptically Polarized Antennas
Journal ArticleDOI
Measurement of the scattering matrix with an intervening ionosphere
TL;DR: In this article, the effect of the interposition of a magneto-ionic medium (the ionosphere) between the observer and the scatterer upon measurements of the scattering matrix was examined.
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