Separate Estimation of Faraday Rotation and Topography Effects from Polarimetric SAR Data

Konferenz: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
16.05.2006 - 18.05.2006 in Dresden, Germany

Tagungsband: EUSAR 2006

Seiten: 3Sprache: EnglischTyp: PDF

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Zakharov, Alexander (FIRE RAS, Russian Federation)

An importance of utilization the longer wavelength spaceborne SAR for remote sensing of natural Earth covers (forests, sea surface, land use, etc) was underlined in many papers during last decades. But in spite of obvious preference of measurements at lower frequencies, the data in linear polarization basis are corrupted by the influence of propagating media and geometry of scattering surface. One of the ionospheric effects corrupting the measurements of surface scattering properties is Faraday rotation of electromagnetic wave plane. Topography introduces orientation angle shift in polarimetric data. It may be shown that analysis of phases of diagonal elements of scattering matrix in circular basis provides the way of separate estimation of ionospheric and topography effects.