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- W2485344327 abstract "A new methodology to estimate the growth stages of agricultural crops using the time series of polarimetric synthetic aperture radar (PolSAR) images is proposed. The methodology is based on the complex Wishart classifier and both phenological intervals and training areas are identified measuring the distances among polarimetric covariance matrices obtained from the time series of PolSAR data. Consequently, the computation of PolSAR features, which is the main step of state-of-the-art methods, is no longer needed, and the proposed approach can be applied in the same way to any crop type. Experiments undertaken on a dense time series of fully polarimetric C-band RADARSAT-2 images, collected at incidence angles ranging from 23° to 39°, in ascending/descending orbit passes, demonstrate that the proposed methodology can be successfully applied to retrieve the phenological stages of four different crop types. In addition, the effect of combining beams corresponding to different sensor's configurations has been evaluated, showing that it affects the retrieval accuracies. Validation with ground data shows the following: overall accuracy is between 54% and 86%; producer's accuracy (PA) and user's accuracy (UA) range between 21% and 100% and between 33% and 100%, respectively." @default.
- W2485344327 created "2016-08-23" @default.
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- W2485344327 date "2016-11-01" @default.
- W2485344327 modified "2023-10-05" @default.
- W2485344327 title "A Complete Procedure for Crop Phenology Estimation With PolSAR Data Based on the Complex Wishart Classifier" @default.
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- W2485344327 doi "https://doi.org/10.1109/tgrs.2016.2585744" @default.
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