| 利用双极化Sentinel-1数据监测城市地面沉降——以上海市为例 |
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| 引用本文： | 熊佳诚,聂运菊,罗跃,李永飞.利用双极化Sentinel-1数据监测城市地面沉降——以上海市为例[J].测绘通报,2019,0(11):98-102,129. |
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| 作者姓名： | 熊佳诚 聂运菊 罗跃 李永飞 |
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| 作者单位： | 东华理工大学测绘工程学院,江西 南昌,330013;东华理工大学测绘工程学院,江西 南昌,330013;东华理工大学测绘工程学院,江西 南昌,330013;东华理工大学测绘工程学院,江西 南昌,330013 |
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| 基金项目： | 国家自然科学基金（41602258）；江西省数字国土重点实验项目（DLLJ201718） |
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| 摘 要： | 在遥感卫星成像中，极化是非常重要的概念。不同极化数据包含的地面信息不同，其应用价值也不同。针对VV、VH极化数据在城市地面沉降监测中的应用，本文利用双极化Sentinel-1数据监测上海市城区地面沉降，分析两种监测结果产生差异的原因，并与水准数据进行对比验证。结果表明，VV极化数据对研究区的监测整体性优于VH极化数据；干涉对相干性质量与有效像素数数量均高于VH极化数据；监测结果与水准数据的偏差小于VH极化数据。
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| 关 键 词： | 短基线集 双极化 城市 地面沉降 干涉 |
| 收稿时间： | 2019-01-16 |
Monitoring urban land subsidence by dual-polarization Sentinel-1 data: a case study of Shanghai |
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| XIONG Jiacheng,NIE Yunju,LUO Yue,LI Yongfei.Monitoring urban land subsidence by dual-polarization Sentinel-1 data: a case study of Shanghai[J].Bulletin of Surveying and Mapping,2019,0(11):98-102,129. |
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| Authors: | XIONG Jiacheng NIE Yunju LUO Yue LI Yongfei |
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| Institution: | School of Surveying and Mapping Engineering, East China University of Technology, Nanchang 330013, China |
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| Abstract: | Polarization is a very important concept in remote sensing satellite imaging.Different polarization data contain different ground information and have different application values.In view of the application of VV and VH polarization data in urban ground subsidence monitoring, the dual-polarization Sentinel-1 data is used to monitor the ground subsidence in the urban area of Shanghai. The reasons for the differences between the two monitoring results are analyzed and compared with the leveling monitoring data for verification. The results show that the monitoring integrity of VV polarization data is better than that of VH polarization data. The quality of coherence and the number of effective pixels of VV polarization data are both higher than that of VH polarization data.The deviation between monitoring results and leveling data is smaller than that of VH polarization data. |
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| Keywords: | SBAS-InSAR dual-polarization urban land subsidence interference |
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