Capability of multi-temporal Radarsat-2 data in monitoring canola crop and its plant height

文献类型： 外文期刊

第一作者： Yang, Hao

作者： Yang, Hao;Chen, Erxue;Li, Zengyuan;Feng, Qi;Zhao, Lei;Yang, Hao;Yang, Guijun;Xu, Xingang;Yuan, Lin

作者机构：

关键词： synthetic aperture radar;crop growth monitoring;height estimation;polarimetric feature

期刊名称：THIRD INTERNATIONAL CONFERENCE ON AGRO-GEOINFORMATICS (AGRO-GEOINFORMATICS 2014)

ISSN： 2334-3168

年卷期： 2014 年

页码：

收录情况： SCI

摘要： The potential capability of C-Band fully polarimetric synthetic aperture radar data for monitoring canola height was investigated in this study. Polarimetric parameters of canola fields were extracted with polarimetric decompositions method from multi-temporal Radarsat-2 images. Temporal behavior of polarimetric features with different varieties and sowing dates was presented from its sowing to its harvest. It was found that the evolution curve of Entropy and Alpha-angle parameters is highly consistent with the evolution trend of canola height over time. A second order polynomial model was applied to inverse the canola height over a farmland area of China, during the 2013 growing season. Even if the proposed method is simple, the result was encouraging with a high level of agreement (R-2=0.96, RMSE=13.1cm, RE=14.3%). Therefore, it revealed a strong capability of polarimetric synthetic aperture radar data in characterizing canola plant height, especially in vegetative growth stage.

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