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Rice polarization scattering characteristics and paddyfield recognition

文献类型： 外文期刊

作者： Shen, Shuanghe 1 ; Zhang, Pingping 2 ; Li, Bingbai 3 ;

作者机构： 1.Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China

2.Hubei Meteorol Bur, Wuhan 430074, Hubei, Peoples R China

3.Jiangsu Acad Agr Sci, Nanjing 210014, Jiangsu, Peoples R China

关键词： paddy rice;ASAR;polarization;NDVI

期刊名称：OPTICS FOR NATURAL RESOURCES, AGRICULTURE, AND FOODS II

ISSN： 0277-786X

年卷期： 2007 年 6761 卷

页码：

收录情况： SCI

摘要： Paddy rice is a staple food in China and it's growth monitoring, acreage extraction and yield estimate are of far reaching importance. It is difficult to apply conventional remote sensing technique for obtaining precise information on paddy planting and growth, for rice bowls are mostly distributed over rainy regions in China. The radar image is unlimited by cloud, rain and fog, and could proceed all weather operation and obtain more stable data, therefore it could be used for paddy monitoring. Making use of Envisat's ASAR data and NOAA data in 2004, paddy's backward-scattering, characteristics with different polarizations were studied in this paper. To combine muti-temporal radar data with one view ETM image, paddyfield of experimental area in Hongze of Jiangsu Province was classified. Results show that 1) characteristics of paddy's hh and vv polarizations vary from stage to stage and vv polarization is more sensitive. The polarization ratio hh / vv of paddy during metaphase is apparently higher than other objects'. 2) paddy's polarization ratio hh / vv and growth vigor closely relate to each other, thereof two empirical time-domain models of backward-scattering were established, wherewith to estimate number of days after transplanting and growing season. 3) hh and ratio hh / vv are both well correlated with NDVI. 4) hh polarization data could be used for information extraction of towns and water bodies, and the hh / vv image in metaphase for partition of paddy from other objects. The recognition accuracy being ninety percent over, muti-temporal and -polarization radarsat data are of predominance and potential for paddy growth and/or acreage monitoring.

  • 相关文献

[1]Rice Polarization Scattering Characteristics and Paddyfield Recognition. Shuanghe Shen,Pingping Zhang,Bingbai Li. 2007

[2]水稻极化散射特征分析及稻田分类方法研究. 张萍萍,申双和,李秉柏,王小妹. 2006

[3]基于ENVISAT ASAR数据的水稻时域后向散射特征分析. 申双和,杨沈斌,李秉柏,谭炳香,何维. 2009

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[5]ASAR数据与水稻作物模型同化制作水稻产量分布图(英文). 杨沈斌,申双和,李秉柏,谭炳香,李增元. 2009

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[12]A scheme for regional rice yield estimation using ENVISAT ASAR data. Shen ShuangHe,Yang ShenBin,Li BingBai,Tan BingXiang,Le Toan Thuy. 2009

[13]Topdressing nitrogen recommendation for early rice with an active sensor in south China. Xue, Lihong,Yang, Linzhang,Xue, Lihong,Yang, Linzhang,Li, Ganghua,Qin, Xia,Zhang, Hailin. 2014

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