Journal article
Crop Classification Using Short-Revisit Multitemporal SAR Data
Classification of crops and other land cover types is an important application of both optical/infrared and SAR satellite data. It is already an import application of present satellite systems, as it will be for planned missions, such as the Sentinels. An airborne SAR data set with a short revisit time acquired by the German ESAR system during the ESA-campaign, AgriSAR 2006, has been used to assess the performance of different polarization modes for crop classification.
Both C-and L-band SAR data were acquired over the Demmin agricultural test site in North Eastern Germany on a weekly basis during the growing season. Single-and dual-polarization, and fully polarimetric data have been used in the analysis (fully polarimetric data were only available at L-band). The main results of the analysis are, that multitemporal acquisitions are very important for single-and dual-polarization modes, and that cross-polarized backscatter produces the best results, with errors down to 3%–6% at the two frequencies.
There is a trade-off between the polarimetric information and the multitemporal information, where the best overall results are obtained using the multitemporal information. If only a few acquisitions are available, the polarimetric mode may perform better than the single-and dual polarization modes.
Language: | English |
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Publisher: | IEEE |
Year: | 2011 |
Pages: | 423-431 |
ISSN: | 21511535 and 19391404 |
Types: | Journal article |
DOI: | 10.1109/JSTARS.2011.2106198 |
ORCIDs: | Skriver, Henning |
AgriSAR 2006 Agriculture Backscatter C-band SAR data Covariance matrix Demmin agricultural test site German ESAR system L-band L-band SAR data North Eastern Germany SAR satellite data analysis Scattering Sentinels Soil moisture airborne SAR data set backscatter crop classification analysis crops cross-polarized backscatter method data acquisition dual-polarization mode geophysical image processing image classification land cover multitemporal multitemporal SAR data analysis multitemporal data acquisition multitemporal information analysis polarization radar polarimetry synthetic aperture radar vegetation mapping