国立研究開発法人 国際農林水産業研究センター | JIRCAS

Winter Wheat Growth Monitoring Using Multi-temporal TerraSAR-X Dual-polarimetric Data

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

This paper describes a method for monitoring winter wheat growth using multi-temporal TerraSAR-X dual-polarimetric data. Six TerraSAR-X HH/VV images were collected in Hokkaido, and the temporal responses to the winter wheat fields were analyzed. The height, moisture content and dry matter of the crops were measured at nearly the same time as TerraSAR-X data was acquired, and the relationships between these parameters and SAR data, including sigma naught and coherence, were studied. Quadratic relationships between the crop height and sigma naught were observed for HH polarization. The determination coefficient was 0.73 and the model had an RMS error of 0.17 dB for the validation data. Coherence is expressed as a regression equation with two explanatory variables: crop height and elongation. Next, the determination coefficient of 0.69 was observed for HH, while the RMS error of coherence was 0.01 for the validation data. The possibility of using the co-polarization ratio of TerraSAR-X to estimate the vegetation’s water content was also analyzed and a determination coefficient of 0.70 was obtained. The results confirm that X-band SAR data possess great potential for the development of an operational system for monitoring wheat growth.

刊行年月2014-10-01
作成者SONOBE ReiTANI HiroshiWANG XiufengKOBAYASHI NobuyukiSHIMAMURA Hideki
著者キーワード

coherence

sigma naught

公開者Japan International Research Center for Agricultural Sciences
データ作成日2014-10-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
48
4
開始ページ471
終了ページ476
DOI10.6090/jarq.48.471
権利Japan International Research Center for Agricultural Sciences
言語eng