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In the building extraction of urban, polarization and coherence of synthetic aperture radar (SAR) data as multiple scales were used to compensate for the azimuth angle variation that is considered as the azimuth scale effect. As scales varied from single, dual, and multiple polarizations, and to polarimetry, the delineation of buildings with azimuth angles of 90° or slightly away from 90° was satisfactory...
Using the polarization as a scale, we compensated for the azimuth scale effect on the building identification in urban areas. With the increase of polarization dimension (from a single polarization, dual-polarization, to polarimetric data with the rotation of azimuth angle) or change of polarization scale, the azimuth scale effect was gradually resolved.
A normalized function was proposed as the framework to study the heterogeneity of urban radar targets. The function consisted of three types of scales, the physical size of a target, heterogeneity in dielectric constant, and target geometry. The azimuth direction or azimuth scale, one component of the target geometry was exampled to investigate the influence of azimuth orientations of buildings on...
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