| 机载平台基于全球卫星定位系统的土壤湿度遥感 |
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| 引用本文： | 宋冬生,赵凯,关止.机载平台基于全球卫星定位系统的土壤湿度遥感[J].东北林业大学学报,2007,35(5):94-96. |
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| 作者姓名： | 宋冬生 赵凯 关止 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所,长春,130012 |
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| 基金项目： | 国家海洋国家高技术研究发展计划(863计划) |
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| 摘 要： | 根据美国航天局2002年10月进行的基于地表面反射GPS信号的遥感土壤湿度试验数据进行了土壤湿度反演。结果证明,反射GPS信号对土壤湿度特性十分敏感,湿度较大的水体区和农田区反射率较大,干旱区最小,不同植被覆盖对于反射率的影响不同,并对其进行了修正。反演得到的该地区土壤湿度值的分布规律也于10月份相对干旱的实际天气条件相吻合。这一结果证明了利用该技术反演土壤湿度的可行性。
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| 关 键 词： | GPS双基地雷达 反射GPS信号 土壤湿度 |
| 修稿时间： | 2007-02-11 |
Remote Sensing of Soil Moisture Using Global Positioning System on Aircraft Platform |
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| Song Dongsheng,Zhao Kai,Guan Zhi.Remote Sensing of Soil Moisture Using Global Positioning System on Aircraft Platform[J].Journal of Northeast Forestry University,2007,35(5):94-96. |
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| Authors: | Song Dongsheng Zhao Kai Guan Zhi |
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| Institution: | Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, P. R. China |
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| Abstract: | The retrieval soil moisture was obtained using the data from the GPS surface reflection experiment carried out by NASA(National Aeronautics and Space Administration) in October 2002.Result proves that the reflected GPS signal is sensitive to the characteristics of soil moisture.GPS signals have been shown to be strongly reflected from water bodies and agricultural fields,and the weakest reflections take place in arid land.The reflectivity is corrected due to different reflections on various vegetation coverages.The distribution of retrieval soil moisture is coincident with the climatic condition of the study area during the dry month of October,which shows this technique is feasible for retrieval soil moisture. |
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| Keywords: | GPS bistatic radar Reflected GPS signals Soil moisture |
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