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首页> 外文会议>International conference on railway engineering: high-speed railway, heavy haul railway and urban rail transit >A NEW SURVEYING TECHNOLOGY FOR RAILWAY SUBGRADE SETTLEMENT DEFORMATION MONITORING: A CASE STUDY
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A NEW SURVEYING TECHNOLOGY FOR RAILWAY SUBGRADE SETTLEMENT DEFORMATION MONITORING: A CASE STUDY

机译：铁路路基沉降变形监测新测量技术 - 以案例研究

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摘要

Satellite differential interferometric synthetic aperture radar technology (D-InSAR) is an innovative measurement method developing rapidly during recent years in photogrammetry and remote sensing field. To test and demonstrate its applicability to deformation monitoring for railway subgrade settlement, this paper introduces the technical performances of DInSAR, and analyzes its feasibility for measurement of high-speed railway subgrade settlement. As a case study experiment, persistent scatterers (PS) interferometry using satellite D-InSAR technology was applied to detect subgrade deformation over permafrost regions of Qinghai-Tibet Plateau in the Beiluhe test site along the Qinghai-Tibet railway with gathered ENVISAT-ASAR images. The experimental results show that PS interferometry can effectively acquire long-time deformation sequence through analyzing the ground scatterers with relative stable phase and are in accordance with the results obtained by conventional in-situ ground leveling. The deformation characteristics of the sliced rock embankment and railway bridge along the Qinghai-Tibet railway are analyzed and compared.
机译：卫星差动干涉机合成孔径雷达技术（D-Insar）是一种创新的测量方法，近年来在摄影测量和遥感领域迅速发展。本文介绍了铁路路基沉降变形监测的适用性，介绍了Dinsar的技术性能，并分析了其可行性的高速铁路路基沉降的可行性。作为案例研究实验，应用使用卫星D-INSAR技术的持久散射体（PS）干涉测量法以检测青藏高原在青藏铁路沿着青藏铁路的青藏高原沿着收集的envisat-ASAR图像来检测青藏高原的Pudawrost地区的路基变形。实验结果表明，PS干涉测量可以通过分析具有相对稳定相的接地散射仪有效地获取长时间变形序列，并根据常规原位地层获得的结果。分析并比较了沿青藏铁路切片岩石路堤和铁路桥的变形特征。

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