PSInSAR技术在广州市南沙区地面沉降监测中的应用研究
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摘要
随着我国社会经济的发展,城市现代化建设的步伐不断加快,导致一些地区过度开采地下水资源、矿产资源等,它造成了城市地面发生不同程度的地面沉降,给人们的生活和社会发展造成了巨大的损失。PSInSAR技术作为一种新兴的监测手段,相对于水准测量和GPS等其他常规的监测方法来说,可以大范围获取高时空分辨率的地表形变信息,并且近年来已被广泛应用。本文以广州市南沙区为例,详细介绍了PSInSAR技术的原理及数据处理流程,并对其结果进行分析,表明PSInSAR技术可以获得大范围、高精度的地面沉降数据,克服了传统监测技术的局限性,清晰直观地反映了南沙区的地面沉降情况。
With the social and economic development of our country,the pace of urban modernization construction is accelerating,which leads to over-exploitation of groundwater resources and mineral resources in some areas,and causes different degrees of land subsidence on the urban surface,causing great losses to people's lives and social development.As a new monitoring method,PSInSAR technology has been widely used in recent years because it can obtain high spatial and temporal resolution surface deformation information in a wide range compared with other conventional monitoring methods such as leveling and GPS,and has the advantages of millimeter-scale deformation monitoring accuracy. Taking Nansha of Guangzhou as an example,this paper introduces the principle and data processing flow of PSInSAR technology in detail,and analyses its results. It shows that PSInSAR technology can obtain large-scale and high-precision data of land subsidence and overcome the limitations of traditional monitoring technology,at the same time,it can clearly and intuitively reflect the land subsidence condition in Nansha of Guangzhou.
With the social and economic development of our country,the pace of urban modernization construction is accelerating,which leads to over-exploitation of groundwater resources and mineral resources in some areas,and causes different degrees of land subsidence on the urban surface,causing great losses to people's lives and social development.As a new monitoring method,PSInSAR technology has been widely used in recent years because it can obtain high spatial and temporal resolution surface deformation information in a wide range compared with other conventional monitoring methods such as leveling and GPS,and has the advantages of millimeter-scale deformation monitoring accuracy. Taking Nansha of Guangzhou as an example,this paper introduces the principle and data processing flow of PSInSAR technology in detail,and analyses its results. It shows that PSInSAR technology can obtain large-scale and high-precision data of land subsidence and overcome the limitations of traditional monitoring technology,at the same time,it can clearly and intuitively reflect the land subsidence condition in Nansha of Guangzhou.
引文
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[13]姜珊珊. PSInSAR技术在公路沉降监测中的应用研究[D].南昌:华东交通大学,2018.
[14]广州市城市规划勘测设计研究院.广州市地面沉降与岩溶地面塌陷调查与规划应对策略(南沙区、白云区、从化区)[R].广州:2018.
[2] Ferretti A,Prati C,Rocca F.Nonlinear subsidence rate estimation using permanent scatterers in SAR interferometry[J]. IEEE Transactions on Geoscience and Remote Sensing,2000,38(5):2202~2212.
[3] Ferretti A,Prati C,Rocca F. Permanent scatterers in SAR interferometry[J]. IEEE Transactions on Geoscience and Remote Sensing,2001,39(1):8~20.
[4]李德仁,廖明生,王艳.永久散射体雷达干涉测量技术[J].武汉大学学报·信息科学版,2004,29(8):664~667.
[5]陈强.基于永久散射体雷达差分干涉探测区域地表形变的研究[D].成都:西南交通大学,2006.
[6]罗小军.永久散射体雷达差分干涉理论及在上海地面沉降监测中的应用[D].成都:西南交通大学,2007.
[7]王艳,廖明生,李德仁等.利用长时间序列相干目标获取地面沉降场[J].地球物理学报,2007,50(2):598~604.
[8]傅文学,田庆久,郭小方. PS技术及其在地表形变监测中的应用现状与发展[J].地球科学进展,2006,21(11):1193~1198.
[9]邢学敏. CRIn SAR与PSInSAR联合监测矿区时序地表形变研究[J].测绘学报,2014,43(8):878.
[10]陆燕燕,柯长青,陈德良等. PS-In SAR在沛县矿区地表沉降监测中的应用[J].地理空间信息,2016,14(5):96~99.
[11]邹昊,邓喀中.基于PSInSAR技术的老采空区地表沉降监测研究[J].煤炭技术,2017,36(5):175~177.
[12]胡波. PSInSAR技术监测地表形变的研究[D].长沙:中南大学,2008.
[13]姜珊珊. PSInSAR技术在公路沉降监测中的应用研究[D].南昌:华东交通大学,2018.
[14]广州市城市规划勘测设计研究院.广州市地面沉降与岩溶地面塌陷调查与规划应对策略(南沙区、白云区、从化区)[R].广州:2018.