http://www.cnr.it/ontology/cnr/individuo/prodotto/ID301056
Temporal Polarimetric Behavior of Oilseed Rape (Brassica napus L.) at C-Band for Early Season Sowing Date Monitoring (Articolo in rivista)
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- Temporal Polarimetric Behavior of Oilseed Rape (Brassica napus L.) at C-Band for Early Season Sowing Date Monitoring (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.3390/rs61110375 (literal)
- Alternative label
Yang, H.ab , Li, Z.a , Chen, E.a , Zhao, C.b , Yang, G.b , Casa, R.c , Pignatti, S.d , Feng, Q.a (2014)
Temporal Polarimetric Behavior of Oilseed Rape (Brassica napus L.) at C-Band for Early Season Sowing Date Monitoring
in Remote sensing (Basel); Molecular Diversity Preservation International-MDPI, Basel (Swaziland)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Yang, H.ab , Li, Z.a , Chen, E.a , Zhao, C.b , Yang, G.b , Casa, R.c , Pignatti, S.d , Feng, Q.a (literal)
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- http://www.mdpi.com/2072-4292/6/11/10375 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- a. Institute of Forest Resource Information Techniques, Chinese Academy of ForestryBeijing, China
b. Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry SciencesBeijing, China
c. Department of Agriculture, Forests, Nature and Energy (DAFNE), Universita' della TusciaViterbo, Italy
d. CNR-IMAA, Institute of Methodologies for Environmental Analysis, Consiglio Nazionale delle Ricerche C.da S. Loja, 85050, Tito Scalo (PZ), Italy (literal)
- Titolo
- Temporal Polarimetric Behavior of Oilseed Rape (Brassica napus L.) at C-Band for Early Season Sowing Date Monitoring (literal)
- Abstract
- Spatial monitoring of the sowing date plays an important role in crop yield estimation at the regional scale. The feasibility of using polarimetric synthetic aperture radar (SAR) data for early season monitoring of the sowing dates of oilseed rape (Brassica napus L.) fields is explored in this paper. Polarimetric SAR responses of six parameters, relying on polarization decomposition methods, were investigated as a function of days after sowing (DAS) during the entire growing season, by means of five consecutive Radarsat-2 images. A near-continuous temporal evolution of these parameters was observed, based on 88 oilseed rape fields. It provided a solid basis for determining the suitable temporal window and the best polarimetric parameters for sowing date monitoring. A high sensitivity of all polarimetric parameters to the DAS at different growing stages was shown. Simple linear models could be calibrated to estimate sowing dates at early growth stages and were validated on an independent data set. Although Volume and Span parameters provided the highest sowing date estimation accuracy at the earlier growth stages, the other four parameters (Volume/Total, Odd/Total, Entropy and Alpha) were more accurate for a wider temporal window. These results demonstrate the capability and high potential of polarimetric SAR data for monitoring the sowing date of crops in the early season. (literal)
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