差分干涉沉降监测时相效应与数据选择研究Study on time phase effect and data selection of settlement monitoring by DInSAR
刘健锋,胡庆武,艾明耀,熊成利,金洪芳
摘要(Abstract)：
针对DInSAR沉降监测中选择不同时相组合影像的沉降监测结果精度的影响差异和监测结果偏差,该文以多期DInSAR数据按照不同时相组合进行DInSAR相干分析计算沉降量,同时引入同期水准沉降监测结果作为评价指标,提出了DInSAR沉降监测中影像组合的时相选择原则。该文以降水量为影响因子,对降水量与DInSAR沉降监测精度进行定量分析,提出针对时相数据不当干涉处理改正模型,对由降水影响的不同季节地表覆盖和散射分量差异造成的DInSAR沉降监测偏差进行了改正。实验结果表明:该方法能够为高精度、可靠DInSAR沉降监测提供时相选择依据,可为长三角城市群沉降监测遥感方法大规模应用奠定数据支撑。
关键词(KeyWords)： DInSAR;沉降监测;时相效应;数据选择;降水量;改正模型
基金项目(Foundation): 浙江省公益研究计划项目(LGF18D010006)
作者(Author): 刘健锋,胡庆武,艾明耀,熊成利,金洪芳
DOI: 10.16251/j.cnki.1009-2307.2021.12.021
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