![]() Despite these inaccuracies, the polarimetric features turned out to improve potential land cover mapping as compared with backscatter intensities and dual-polarization features of the input products alone. ![]() Yet, especially the average Alpha angle was found to be biased and too high for some of the compared surfaces. A systematic comparison with the original dual-polarization product showed an increase in information content and largely feasible polarimetric features. This was analyzed statistically, visually and within several classification processes to get an understanding of how well such a dataset depicts scattering mechanisms and other polarimetric features as inputs for land use and land cover mapping. The images were acquired within a 6-day period over Southern Germany and have been processed to mimic an actual quad-pol product. This work presents a technique to merge two Sentinel-1 image products of complementary polarimetric information (HH/HV and VH/VV) to derive pseudo-polarimetric features, such as polarimetric covariance, but also model-based and eigenvalue-based decompositions and an unsupervised Wishart classification of scattering types. 2Christian Doppler Laboratory for Geospatial and EO-Based Humanitarian Technologies, Department of Geoinformatics, University of Salzburg, Salzburg, Austria.1Institute of Geography, University of Tübingen, Tübingen, Germany.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |