基于双模式驱动时序InSAR技术对天津滨海国际机场形变监测  

Deformation Monitoring of Tianjin Binhai International Airport by Dual-mode Time Series InSAR Technology

作　　者：杨磊 王敏 高斌 胡仲伟 YANG Lei;WANG Min;GAO Bin;HU Zhongwei(Tianjin Key Laboratory for Advanced Signal Processing,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《现代雷达》2024年第10期75-80,共6页Modern Radar

基　　金：中央高校基本科研业务费资助项目(No.3122025073)。

摘　　要：为解决传统地面监测手段成本高、观测周期长等问题,时序干涉合成孔径雷达(InSAR)技术广泛应用于机场形变监测研究中,但不同单一时序InSAR技术均存在监测缺陷。差分干涉测量短基线时序分析技术(SBAS-InSAR)技术仅适用于大范围区域监测,缺乏单个地表点分析。永久散射体合成孔径干涉测量(PS-InSAR)技术过度依赖相干性,局限于线性形变。为解决单一化监测手段所存在的问题,采用双模式驱动时序InSAR(DMTS-InSAR)技术对机场形变进行分析。基于21景Sentinel-1A升轨雷达影像,以天津滨海国际机场局部区域为研究区,对DMTS-InSAR技术的监测结果进行评估,克服了单一技术分析的局限性。评估后发现滨海国际机场局部区域存在沉降现象,其中机场停机坪处的形变最为显著,最大垂直沉降速率达到25 mm/a。结果表明,利用DMTS-InSAR技术监测机场形变,可获取更为准确可靠的形变结果。In order to solve the problems of high cost and long observation period of traditional ground subsidence methods,time-series InSAR technology is widely used in airport deformation monitoring research.But there are monitoring defects in different single time-series InSAR techniques.SBAS-InSAR technique is only suitable for large-scale area monitoring,and lacks the analysis of a single surface point.PS-InSAR techniques is overly dependent on coherence and limited to linear deformation.To overcome the limitations of single-technique analysis,DMTS-InSAR technique is used to analyze the airport deformation in this paper.In this paper,21 ascending radar images from Sentinel-1A were utilized,with a focus on the local area of Tianjin Binhai International Airport as the study region.The evaluation of monitoring results obtained through the DMTS-InSAR technique aimed to address the limitations inherent in single-technique analyses.The experimental results indicate that there are scattered local subsidence areas at Tianjin Binhai International Airport.Among them,the deformation at the airport apron is the most significant,with a maximum vertical subsidence rate of 25 mm/a.The findings suggest that utilizing DMTS-InSAR techniques for monitoring airport ground deformation can yield more accurate and reliable deformation results。

关 键 词：双模式驱动时序干涉测量技术 永久散射体合成孔径干涉测量 差分干涉测量短基线集时序分析技术 机场形变监测 

分 类 号：TN957.52[电子电信—信号与信息处理] TN959.6[电子电信—信息与通信工程]