顾及大气误差和相位解缠误差的LiCSBAS方法对高山峡谷地区地质灾害的探测

doi:10.13474/j.cnki.11-2246.2022.0182.

测绘通报 ›› 2022, Vol. 0 ›› Issue (6): 114-120147.doi: 10.13474/j.cnki.11-2246.2022.0182.

顾及大气误差和相位解缠误差的LiCSBAS方法对高山峡谷地区地质灾害的探测

周定义¹, 左小清¹, 喜文飞^1,2, 肖波^1,3, 刘馨雨⁴

1. 昆明理工大学国土资源工程学院, 云南昆明 650093;
2. 云南师范大学地理学部, 云南昆明, 650500;
3. 云南交通职业技术学院公路学院, 云南昆明 650500;
4. 昆明理工大学城市学院, 云南昆明 650051

收稿日期:2021-08-09 发布日期:2022-06-30
作者简介:周定义(1995-),男,硕士生,研究方向为InSAR监测及地质灾害探测。E-mail:1246550757@qq.com
基金资助:
国家自然科学基金(41761081);云南省应用基础研究计划面上项目(2018FB078)

The LiCSBAS method considering atmospheric errors and phase unwrapping errors in the detection of geological disasters in alpine valley region

ZHOU Dingyi¹, ZUO Xiaoqing¹, XI Wenfei^1,2, XIAO Bo^1,3, LIU Xinyu⁴

1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Department of Geography, Yunnan Normal University, Kunming 650500, China;
3. Institute of Highway, Yunnan Communications Vocational and Technical College, Kunming 650500, China;
4. City College, Kunming University of Science and Technology, Kunming 650051, China

Received:2021-08-09 Published:2022-06-30

摘要/Abstract

摘要： 针对目前时序分析数据预处理耗时量大及高山峡谷地区单轨道探测地质灾害存在的弊端,本文以东川小江沿线高山峡谷地区为研究对象,利用时序LiCSBAS方法和联合二维形变分解对高山峡谷地区地质灾害进行探测,探究利用LiCSAR和GACOS产品解决处理时间过长、控制大气延迟、相位解缠误差在实际应用中的效果。试验结果表明:①利用LiCSAR和GACOS产品能大大加快数据处理效率和降低大气延迟对形变结果的影响;②环闭合相位能够有效识别出均方根值大于定义阈值的有问题的环路;③联合升降轨获取一维视线向形变并进行二维分解,得到垂直向和东西向的形变,综合各形变信息,引入高分辨率光学影像,共探测出6处地质灾害区。通过试验验证了本文方法在高山峡谷地区地质灾害探测结果的准确性及优势,为政府部门监测及探测高山峡谷地区地质灾害的发生提供了一种有效、快速的探测手段。

关键词: 高山峡谷, 地质灾害, LiCSBAS, 二维形变, 大气校正, 解缠误差

Abstract: Aiming at the current time-consuming data preprocessing of time series analysis and the disadvantages of single-track detection of geological disasters in mountain and valley areas,this paper takes the mountain and valley areas along the Xiaojiang river in Dongchuan as the research object,using the time series LiCSBAS method and joint 2D deformation decomposition detect geological disasters in high mountains and valleys,explore the practical application of using LiCSAR products and GACOS products to solve the effects of excessive processing time,atmospheric delay control,and phase unwrapping error.The experimental results show that:①Using LiCSAR and GACOS products can greatly speed up the data processing efficiency and reduce the atmospheric delay on the image of the deformation results.②The loop closed phase can effectively identify the problematic loop with the root mean square value greater than the defined threshold.③The 1D line-of-sight deformation obtained by the joint lifting rail is divided into two dimensions to obtain the vertical and east-west deformations. The information of various deformations is integrated,and high-resolution optical images are introduced to detect a total of 6 geological disaster areas. The accuracy and advantages of this method in the detection of geological disasters in mountain and valley areas are verified,and which provides an effective and rapid detection method for government departments to monitor and detect the occurrence of geological disasters in mountain and valley areas.

Key words: alpine valley, geological disasters, LiCSBAS, 2D deformation, atmospheric correction, unwrapping error

中图分类号:

P237

周定义, 左小清, 喜文飞, 肖波, 刘馨雨. 顾及大气误差和相位解缠误差的LiCSBAS方法对高山峡谷地区地质灾害的探测[J]. 测绘通报, 2022, 0(6): 114-120147.

ZHOU Dingyi, ZUO Xiaoqing, XI Wenfei, XIAO Bo, LIU Xinyu. The LiCSBAS method considering atmospheric errors and phase unwrapping errors in the detection of geological disasters in alpine valley region[J]. Bulletin of Surveying and Mapping, 2022, 0(6): 114-120147.

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顾及大气误差和相位解缠误差的LiCSBAS方法对高山峡谷地区地质灾害的探测

The LiCSBAS method considering atmospheric errors and phase unwrapping errors in the detection of geological disasters in alpine valley region

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