Retrieval of phenological stages of onion fields during the first year of growth by means of C-band polarimetric SAR measurements

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Title: Retrieval of phenological stages of onion fields during the first year of growth by means of C-band polarimetric SAR measurements
Authors: Mascolo, Lucio | Lopez-Sanchez, Juan M. | Vicente-Guijalba, Fernando | Mazzarella, Giuseppe | Nunziata, Ferdinando | Migliaccio, Maurizio
Research Group/s: Señales, Sistemas y Telecomunicación
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Instituto Universitario de Investigación Informática
Keywords: Agriculture | Onion | Phenology | SAR polarimetry | Phenology estimation
Knowledge Area: Teoría de la Señal y Comunicaciones
Issue Date: 30-Jun-2015
Publisher: Taylor & Francis
Citation: International Journal of Remote Sensing. 2015, 36(12): 3077-3096. doi:10.1080/01431161.2015.1055608
Abstract: The phenological stages of onion fields in the first year of growth are estimated using polarimetric observables and single-polarization intensity channels. Experiments are undertaken on a time series of RADARSAT-2 C-band full-polarimetric synthetic aperture radar (SAR) images collected in 2009 over the Barrax region, Spain, where ground truth information about onion growth stages is provided by the European Space Agency (ESA)-funded agricultural bio/geophysical retrieval from frequent repeat pass SAR and optical imaging (AgriSAR) field campaign conducted in that area. The experimental results demonstrate that polarimetric entropy or copolar coherence when used jointly with the cross-polarized intensity allows unambiguously distinguishing three phenological intervals.
Sponsor: This work was partially supported by the Spanish Ministry of Economy and Competitiveness (MINECO) and EU FEDER, under Project TEC2011-28201-C02-02.
ISSN: 0143-1161 (Print) | 1366-5901 (Online)
DOI: 10.1080/01431161.2015.1055608
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Taylor & Francis
Peer Review: si
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