| 差分干涉测量黄河三角洲天然湿地水位变化研究 |
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| 引用本文： | 谢酬,邵芸,方亮,许骥.差分干涉测量黄河三角洲天然湿地水位变化研究[J].湿地科学,2012,10(3):257-262. |
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| 作者姓名： | 谢酬 邵芸 方亮 许骥 |
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| 作者单位： | 1. 遥感科学国家重点实验室,中国科学院遥感应用研究所,北京师范大学,北京100101
2. 中国测绘科学研究院,北京,100039 |
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| 基金项目： | 国家自然科学基金项目(41001276);中国科学院知识创新工程重要方向项目(KZCX2-YW-Q10-2-2-1,KZCX1-YW-08-02,KZCX2-YW-313-2)资助 |
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| 摘 要： | 利用合成孔径雷达差分干涉测量技术监测湿地水位变化,对湿地保护、恢复和重建具有非常重要的意义.利用C波段VV极化和L波段HH极化合成孔径雷达影像,结合同步野外测量和调查工作,在各季节不同时间间隔下,研究不同湿地类型的后向散射特性差异和干涉相干性差异;在对影响干涉相干性的因素进行评价的基础上,建立差分干涉测量湿地水位变化监测的函数模型,利用获取的合成孔径雷达影像,分析黄河三角洲的天然湿地水位变化.研究结果表明,利用差分干涉测量技术不仅可以获取湿地水位变化,而且还能提供水位变化的空间细节,这是本技术最突出的特色.
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| 关 键 词： | 合成孔径雷达影像 差分干涉测量 天然湿地 水位变化 黄河三角洲 |
Measuring Water Level Changes of Natural Wetlands with Differential Interferometry Technology in Yellow River Delta |
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| XIE Chou
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SHAO Yun
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FANG Liang
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XU Ji.Measuring Water Level Changes of Natural Wetlands with Differential Interferometry Technology in Yellow River Delta[J].Wetland Science,2012,10(3):257-262. |
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| Authors: | XIE Chou SHAO Yun FANG Liang XU Ji |
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| Institution: | 1.State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,P.R.China;2.Chinese Academy of Surveying & Mapping,Beijing 100039,P.R.China) |
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| Abstract: | Wetlands play a key role in regional and global environments and are critically linked to many major issues such as climate change,water quality,the hydrological and carbon cycles,and wildlife habitat and biodiversity.It is very important to measure water level changes and consequently water-storage capacity changes in wetlands to enable wetlands protection and re-construction.In this study,VV polarization C-band SAR(Synthetic Aperture Radar) and HH polarization L-band SAR data were used in conjunction with synchronous field measurements and investigations to investigate the potential to detect water level changes for different types of wetlands.After evaluating factors that influence interferometric coherence,the framework for measuring water level changes using InSAR(Interferometric Synthetic Aperture Radar) phase information was presented in this paper.Additionally,the obtained SAR data were used to investigate InSAR-derived water level changes of natural wetlands in Yellow-River Delta.The results showed that the InSAR technology had great potential for application in mapping water level changes of coastal wetlands,and InSAR-derived water level changes of natural wetlands could supply unprecedented spatial details. |
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| Keywords: | images of Synthetic Aperture Radar differential interferometry natural wetland water level change Yellow River Delta |
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