Growth monitoring and classification of rice fields using multitemporal RADARSAT-2 full-polarimetric data

Chinatsu Yonezawa, Masahiro Negishi, Kenta Azuma, Manabu Watanabe, Naoki Ishitsuka, Shigeo Ogawa, Genya Saito

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Spaceborne synthetic aperture radar (SAR) can be used for agricultural monitoring. In this study, three single-polarimetric and four full-polarimetric observation data sets were analysed. A rice paddy field in northern Japan was used as the study site; the data for this site were obtained using RADARSAT-2, which carries a full-polarimetric C-band SAR. Soybean and grass fields were also present within the paddy fields. The temporal change in the backscattering coefficient of the rice paddy fields for the single-polarization data agreed with the temporal change obtained for a rice growth model based on radiative transfer theory. A three-component decomposition approach was applied to the full-polarimetric data. With each rice growth stage, the volume scattering component ratio increased, whereas the surface scattering component ratio generally decreased. The soybean and grass fields showed a smaller double-bounce scattering component than the rice fields for all the acquired data. The results of this study show that multitemporal observation by full-polarimetric SAR has great potential to be utilized for estimating rice-planted areas and monitoring rice growth.

Original languageEnglish
Pages (from-to)5696-5711
Number of pages16
JournalInternational Journal of Remote Sensing
Volume33
Issue number18
DOIs
Publication statusPublished - 2012 Sep

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Growth monitoring and classification of rice fields using multitemporal RADARSAT-2 full-polarimetric data'. Together they form a unique fingerprint.

Cite this