地基SAR基坑微形变监测方法研究

刘小阳; 孙广通; 李峰; 宋萍; 刘军; 钱安; 王秋玲

doi:10.3788/IRLA201847.0317002

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地基SAR基坑微形变监测方法研究

刘小阳, 孙广通, 李峰, 宋萍, 刘军, 钱安, 王秋玲

文章导航 > 红外与激光工程 > 2018 > 47(3): 317002-0317002(7)

刘小阳, 孙广通, 李峰, 宋萍, 刘军, 钱安, 王秋玲. 地基SAR基坑微形变监测方法研究[J]. 红外与激光工程, 2018, 47(3): 317002-0317002(7). doi: 10.3788/IRLA201847.0317002

引用本文:

刘小阳, 孙广通, 李峰, 宋萍, 刘军, 钱安, 王秋玲. 地基SAR基坑微形变监测方法研究[J]. 红外与激光工程, 2018, 47(3): 317002-0317002(7). doi: 10.3788/IRLA201847.0317002

Liu Xiaoyang, Sun Guangtong, Li Feng, Song Ping, Liu Jun, Qian An, Wang Qiuling. Research on microdeformation monitoring of foundation pit based on ground-based SAR[J]. Infrared and Laser Engineering, 2018, 47(3): 317002-0317002(7). doi: 10.3788/IRLA201847.0317002

Citation:

Liu Xiaoyang, Sun Guangtong, Li Feng, Song Ping, Liu Jun, Qian An, Wang Qiuling. Research on microdeformation monitoring of foundation pit based on ground-based SAR[J]. Infrared and Laser Engineering, 2018, 47(3): 317002-0317002(7). doi: 10.3788/IRLA201847.0317002

地基SAR基坑微形变监测方法研究

doi: 10.3788/IRLA201847.0317002

1.
防灾科技学院防灾工程系,河北三河 065201

基金项目:

中国地震局教师科研基金（20150105）

详细信息

作者简介:
刘小阳(1978-),男,副教授,硕士,主要从事遥感图像处理、工程测量的教学与研究。Email:liuxiaoyang1209@163.com

中图分类号: P237

Research on microdeformation monitoring of foundation pit based on ground-based SAR

1.
Department of Disaster Prevention Engineering,Institute of Disaster Prevention,Sanhe 065201,China

摘要: 地基SAR作为一种新型地面遥感技术，因其高精度、全天候、设站灵活、实时连续观测等特点，在微形变监测领域具有广泛的应用前景。在深入研究了地基SAR微形变监测关键技术问题的基础上，结合基坑监测特点，采用加权圆周中值滤波去噪，提高干涉图信噪比，削弱噪声引起的相位差；提出了基于PSC网的气象改正，减小气象扰动影响，削弱大气相位差。并将改进方法应用到基坑监测实验。实验结果表明，通过加权圆周中值滤波和PSC网的气象改正有效地削弱地基SAR基坑监测中噪声和大气引起的相位变化，实现了亚毫米级的监测精度。为验证地基SAR监测的准确性，利用高精度全站仪进行了同步观测，监测结果表明二者高度一致，进一步说明了地基SAR技术用于基坑微形变监测的可靠性和可行性。
- 地基SAR /
- 基坑 /
- 微形变监测 /
- 气象改正
Abstract: The ground-based SAR, as a new type of ground remote sensing technology, is widely used in the field of microdeformation monitoring because of its high precision, all-weather, flexible and real-time continuous observation. Based on the deep research on the key technical problems of micro-deformation monitoring of ground-based SAR, combined with the characteristics of foundation pit monitoring, the method of weighted median filter denoising was used to improve the signal-to-noise ratio of interferogram and weaken the noise phase difference. The method of atmospheric correction based on the PSC network was proposed to reduce the impact of meteorological disturbances and weaken the atmospheric phase difference. The improved methods were applied to the foundation pit monitoring experiment. The experimental results show that the weighted median filter and PSC network weather correction effectively weaken the phase change caused by noise and atmospheric, and achieve monitoring accruacy of submillimeter. In order to verify the accuracy of ground-based SAR monitoring, the synchronous observation is carried out using high-precision total station, the monitoring results are consistent with the results of ground-based SAR, which verifies the reliability and feasibility of ground-based SAR technique in monitoring the microdeformation of pits.
- ground-based SAR /
- foundation pit /
- microdeformation monitoring /
- atmospheric correction

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地基SAR基坑微形变监测方法研究

doi: 10.3788/IRLA201847.0317002

1. 防灾科技学院防灾工程系,河北三河 065201

作者简介:
刘小阳(1978-),男,副教授,硕士,主要从事遥感图像处理、工程测量的教学与研究。Email:liuxiaoyang1209@163.com

收稿日期: 2017-10-05
修回日期: 2017-11-03
刊出日期: 2018-03-25

基金项目:

中国地震局教师科研基金（20150105）

中图分类号: P237

关键词:

摘要: 地基SAR作为一种新型地面遥感技术，因其高精度、全天候、设站灵活、实时连续观测等特点，在微形变监测领域具有广泛的应用前景。在深入研究了地基SAR微形变监测关键技术问题的基础上，结合基坑监测特点，采用加权圆周中值滤波去噪，提高干涉图信噪比，削弱噪声引起的相位差；提出了基于PSC网的气象改正，减小气象扰动影响，削弱大气相位差。并将改进方法应用到基坑监测实验。实验结果表明，通过加权圆周中值滤波和PSC网的气象改正有效地削弱地基SAR基坑监测中噪声和大气引起的相位变化，实现了亚毫米级的监测精度。为验证地基SAR监测的准确性，利用高精度全站仪进行了同步观测，监测结果表明二者高度一致，进一步说明了地基SAR技术用于基坑微形变监测的可靠性和可行性。

English Abstract

Research on microdeformation monitoring of foundation pit based on ground-based SAR

1. Department of Disaster Prevention Engineering,Institute of Disaster Prevention,Sanhe 065201,China

Received Date: 2017-10-05
Rev Recd Date: 2017-11-03
Publish Date: 2018-03-25

Keywords:

Abstract: The ground-based SAR, as a new type of ground remote sensing technology, is widely used in the field of microdeformation monitoring because of its high precision, all-weather, flexible and real-time continuous observation. Based on the deep research on the key technical problems of micro-deformation monitoring of ground-based SAR, combined with the characteristics of foundation pit monitoring, the method of weighted median filter denoising was used to improve the signal-to-noise ratio of interferogram and weaken the noise phase difference. The method of atmospheric correction based on the PSC network was proposed to reduce the impact of meteorological disturbances and weaken the atmospheric phase difference. The improved methods were applied to the foundation pit monitoring experiment. The experimental results show that the weighted median filter and PSC network weather correction effectively weaken the phase change caused by noise and atmospheric, and achieve monitoring accruacy of submillimeter. In order to verify the accuracy of ground-based SAR monitoring, the synchronous observation is carried out using high-precision total station, the monitoring results are consistent with the results of ground-based SAR, which verifies the reliability and feasibility of ground-based SAR technique in monitoring the microdeformation of pits.