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Multi-temporal dual- and quad-polarimetric synthetic aperture radar data for crop-type mapping

Valcarce-Diñeiro, Rubén; Arias-Pérez, Benjamín; Lopez-Sanchez, Juan M.; Sánchez, Nilda

Authors

Benjamín Arias-Pérez

Juan M. Lopez-Sanchez

Nilda Sánchez



Abstract

Land-cover monitoring is one of the core applications of remote sensing. Monitoring and mapping changes in the distribution of agricultural land covers provide a reliable source of information that helps environmental sustainability and supports agricultural policies. Synthetic Aperture Radar (SAR) can contribute considerably to this monitoring effort. The first objective of this research is to extend the use of time series of polarimetric data for land-cover classification using a decision tree classification algorithm. With this aim, RADARSAT-2 (quad-pol) and Sentinel-1 (dual-pol) data were acquired over an area of 600 km2 in central Spain. Ten polarimetric observables were derived from both datasets and seven scenarios were created with different sets of observables to evaluate a multitemporal parcel-based approach for classifying eleven land-cover types, most of which were agricultural crops. The study demonstrates that good overall accuracies, greater than 83%, were achieved for all of the different proposed scenarios and the scenario with all RADARSAT-2 polarimetric observables was the best option (89.1%). Very high accuracies were also obtained when dual-pol data from RADARSAT-2 or Sentinel-1 were used to classify the data, with overall accuracies of 87.1% and 86%, respectively. In terms of individual crop accuracy, rapeseed achieved at least 95% of a producer's accuracy for all scenarios and that was followed by the spring cereals (wheat and barley), which achieved high producer's accuracies (79.9%-95.3%) and user's accuracies (85.5% and 93.7%).

Citation

Valcarce-Diñeiro, R., Arias-Pérez, B., Lopez-Sanchez, J. M., & Sánchez, N. (2019). Multi-temporal dual- and quad-polarimetric synthetic aperture radar data for crop-type mapping. Remote Sensing, 11(13), Article 1518. https://doi.org/10.3390/rs11131518

Journal Article Type Article
Acceptance Date Jun 24, 2019
Online Publication Date Jun 27, 2019
Publication Date Jul 1, 2019
Deposit Date Nov 27, 2024
Publicly Available Date Nov 28, 2024
Journal Remote Sensing
Electronic ISSN 2072-4292
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 11
Issue 13
Article Number 1518
DOI https://doi.org/10.3390/rs11131518
Keywords Agriculture; Classification; C5.0 algorithm; Multitemporal; Polarimetric SAR; RADARSAT-2; Sentinel-1
Public URL https://hull-repository.worktribe.com/output/4716173

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0

Copyright Statement
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).




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