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基于双极化Sentinel-1A数据的西南某机场沉降监测应用

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以西南某机场为监测对象,收集2019年1月11日至2021年11月8日35景双极化Sentinel-1A降轨数据,应用PS-InSAR技术结合双极化数据获取了该机场范围内的形变分布情况,将双极化沉降数据进行对比,再与沉降形变最大水准测量数据进行验证.结果表明,合成孔径雷达差分干涉技术(InSAR)沉降形变区域与水准沉降形变区域的位置基本吻合,双极化沉降时间序列表现出一致性,该机场飞行区最大沉降速率达-77 mm/y(VV极化)和-74 mm/y(VH极化),累计沉降量超过-200 mm(VV和VH极化),与2021年5月最大沉降形变水准测量值对比,发现该机场沉降形变还在继续加深.此研究表明,InSAR技术结合双极化数据可高效识别沉降区域,全面掌握机场沉降形变情况,对监测西南地区机场沉降具有重要意义.
Monitoring Application of a Southwest Airport Based on the Dual-pole Sentinel-1A Data
Taking an airport in Southwest China as the monitoring object,35 views of dual-polarized Sentinel-1A downtrack data were collected from January 11,2019 to November 8,2021,and the PS-InSAR technique combined with the dual-polarized data was applied to obtain the distribution of deformation within the scope of this airport,and the dual-polarized settlement data were compared and then verified with the maximum level measurement data of the settlement deformation.The results show that the locations of the InSAR settlement deformation areas and the level settlement deformation areas basically coincide,the dual-polarization settlement time series show consistency,and the maximum settlement rates in the flight area of this airport reach-77 mm/y(VV polarization)and-74 mm/y(VH polarization),and the cumulative settlement exceeds-200 mm(VV and VH polarization),which is the same as the maximum settlement deformation value of-197 mm measured by the level in May 2021,which is the same as the maximum deformation value of-2021(VV and VH polarization).Comparing with the maximum settlement deformation of-197 mm in May 2021,it is found that the settlement deformation of this airport is still deepening.This study shows that the InSAR technology combined with dual-polarization data can efficiently identify the settlement areas and comprehensively grasp the settlement deformation of airports,which is of great significance for monitoring the airport settlement in Southwest China.

airportPS-InSARdual-polarization Sentinel-1Asubsidence monitoring

万必强、程小慷

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中国民用航空飞行学院机场学院,四川广汉 618307

机场 PS-InSAR 双极化Sentinel-1A 沉降监测

2024

科技和产业
中国技术经济学会

科技和产业

影响因子:0.361
ISSN:1671-1807
年,卷(期):2024.24(20)