Journal article
Crop Classification by Multitemporal C- and L-Band Single- and Dual-Polarization and Fully Polarimetric SAR
Classification of crops and other land cover types is an important application of both optical/infrared and synthetic aperture radar (SAR) satellite data. It is already an import application of present satellite systems, as it will be for planned missions, such as the Sentinels. A multitemporal data set from the Danish airborne polarimetric EMISAR has been used to assess the performance of different polarization modes for crop classification.
Both C- and L-band SAR data were acquired simultaneously over the Foulum agricultural test site in Denmark on a monthly basis during the growing season. Single- and dual-polarization and fully polarimetric data have been used in the analysis. The best result for a single-frequency system was a 20%–22% classification error, and the results for C-band and for L-band were very similar.
The best result was obtained at C-band using the VVXP polarization combination (the dual-polarization mode, where the VV-channel and the cross-polarized channel have been combined) and at L-band using the fully polarimetric mode with the Hoekman and Vissers classifier. The best result for the combination of the C- and L-bands was 16%.
In this case also, the VVXP polarization combination performed best. There is a tradeoff between the polarimetric information and the multitemporal information, where the best overall results are obtained using the multitemporal information.
Language: | English |
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Publisher: | IEEE |
Year: | 2012 |
Pages: | 2138-2149 |
ISSN: | 15580644 and 01962892 |
Types: | Journal article |
DOI: | 10.1109/TGRS.2011.2172994 |
ORCIDs: | Skriver, Henning |
Accuracy Agriculture Backscatter C-band SAR data Covariance matrix Danish airborne polarimetric EMISAR Denmark Foulum agricultural test site Hoekman classifier L-band L-band SAR data Scattering Springs VVXP polarization Vissers classifier classification error analysis crop classification analysis crops cross-polarized channel dual-polarization mode fully polarimetric SAR fully polarimetric data infrared satellite data land cover multitemporal multitemporal C-band dual-polarization multitemporal C-band single-polarization multitemporal L-band dual-polarization multitemporal L-band single-polarization multitemporal data set multitemporal information optical satellite data polarimetric information polarization radar polarimetry remote sensing by radar single-frequency system synthetic aperture radar synthetic aperture radar (SAR) synthetic aperture radar satellite data vegetation mapping