| ALOS PALSAR双极化数据水稻制图 |
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| 引用本文： | 凌飞龙,李增元,白黎娜,田昕,陈尔学,杨永恬.ALOS PALSAR双极化数据水稻制图[J].遥感学报,2011,15(6):1221-1234. |
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| 作者姓名： | 凌飞龙 李增元 白黎娜 田昕 陈尔学 杨永恬 |
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| 作者单位： | 福州大学 空间信息工程研究中心,福建 福州 350002;中国林业科学研究院 资源信息研究所,北京 100091;中国林业科学研究院 资源信息研究所,北京 100091;中国林业科学研究院 资源信息研究所,北京 100091;中国林业科学研究院 资源信息研究所,北京 100091;中国林业科学研究院 资源信息研究所,北京 100091;中国林业科学研究院 资源信息研究所,北京 100091 |
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| 基金项目： | 国家高技术研究发展计划 (863计划)(编号: 2006AA120101) |
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| 摘 要： | 以江苏省海安县为研究区,使用2008年获取的日本ALOS卫星PALSAR双极化模式数据,分析水稻在L波段SAR图像上的后向散射特征,并提出相应的水稻制图方法。水稻在L波段上表现出了和C波段相同的时相变化特征。HH极化后向散射依赖于水稻植株的空间分布结构,某些机械插秧区域的布拉格共振现象引起水稻后向散射严重增强,给利用PALSAR数据水稻制图带来了困难。而HV极化不存在布拉格共振现象。在考虑布拉格共振影响的条件下,提出了联合PALSAR双极化模式HH和HV极化数据、基于时相变化特征进行水稻制图的方法,获得了88.4%的制图精度。
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| 关 键 词： | ALOS PALSAR L波段 水稻制图 布拉格共振 |
| 收稿时间： | 2010/1/25 0:00:00 |
| 修稿时间： | 2011/4/26 0:00:00 |
Rice mapping using ALOS PALSAR dual polarization data |
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| LING Feilong,LI Zengyuan,BAI Lin,TIAN Xin,CHEN Erxue and YANG Yongtian.Rice mapping using ALOS PALSAR dual polarization data[J].Journal of Remote Sensing,2011,15(6):1221-1234. |
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| Authors: | LING Feilong LI Zengyuan BAI Lin TIAN Xin CHEN Erxue and YANG Yongtian |
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| Institution: | Key Laboratory of Spatial Data Mining & Information Sharing of Ministry of Education, Fuzhou University, Fuzhou 350002, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China;Institute of Forest Resources Information Techniques, Chinese Academy of Forestry, Beijing 100091, China |
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| Abstract: | Fine beam dual polarization data onboard Advanced Land Observing Satellite-Phased Array type L-band Synthetic Aperture Radar (ALOS PALSAR) for Hai'an, Jiangsu, China acquired in 2008 were used to analyze rice backscatter features at L-band SAR for the development of rice mapping method. Similar temporal change trend of backscatter was observed at L-band SAR to that of C-band. With the dependence of HH backscatter on the spatial distribution structure of the rice canopy, Bragg resonance scattering has been observed in some mechanically planted fi elds due to extremely enhanced backscatter, making it diffi cult to map rice using L-band SAR. However, the HV polarization is not subject to Bragg resonance. Considering the Bragg resonance effect in HH polarization, a rice mapping method was proposed based on the temporal change characteristics of backscattering coeffi cient by the synergistic use of HH and HV polarization images of ALOS PALSAR. A mapping accuracy of about 88.4% was achieved. |
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| Keywords: | ALOS PALSAR L-band rice mapping Bragg resonance |
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