文献类型： 会议论文
第一作者： Hongyu Li
作者： Hongyu Li 1 ; Kun Li 2 ; Yun Shao 2 ; Ping Zhou 1 ; Xianyu Guo 3 ; Changan Liu 4 ; Long Liu 2 ;
作者机构： 1.School of Earth Science and Resources, China University of Geosciences (Beijing)
2.Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences
3.College of Geomatics, Shandong University of Science and Technology
4.Key Laboratory of Agricultural Remote Sensing, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences
关键词： Full polarization;Paddy rice;Phenology retrieval;Radarsat-2
会议名称： IEEE International Geoscience and Remote Sensing Symposium
主办单位：
页码： 4463-4466
摘要： Information of crop phenology is essential for evaluating crop productivity and crop management. Synthetic Aperture Radar (SAR), with the advantage of all-weather, day-night imaging and clouds penetrability, is an effective way for rice growth monitoring. In this study, we developed a method for remotely determining phenological stages of paddy rice with sixteen polarimetric SAR images. The method consists of three procedures: (I) Classified the transplanted rice (T-R) and the direct-sown rice (D-R) field; (II) Sensitivity analysis of polarimetric parameters versus rice phenology; (III) Reconstructing the time-series polarimetric parameters profiles of rice by time-frequency analysis; (IV) Specifying the phenological stages by detecting the maximum point, minimal point and inflection point from the smoothed polarimetric parameters time profile. Three keys phenological periods of rice were detected with the the accuracy of about 84%.
分类号： TP7-53
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