升降轨InSAR与GPS数据集成反演西安形变场

doi:10.11947/j.AGCS.2016.20150485

测绘学报 ›› 2016, Vol. 45 ›› Issue (7): 810-817.doi: 10.11947/j.AGCS.2016.20150485

升降轨InSAR与GPS数据集成反演西安形变场

王霞迎, 张菊清, 张勤, 赵超英

长安大学地质工程与测绘学院, 陕西西安 710054

收稿日期:2015-09-21 修回日期:2016-03-23 出版日期:2016-07-20 发布日期:2016-07-28
作者简介:王霞迎(1989-),女,博士生,研究方向为InSAR理论及应用。E-mail:yingxiawang@163.com
基金资助:
国家自然科学基金（41274004；41274005；41372375）

Inferring Multi-dimensional Deformation Filed in Xi'an by Combining InSAR of Ascending and Descending Orbits with GPS Data

WANG Xiaying, ZHANG Juqing, ZHANG Qin, ZHAO Chaoying

College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China

Received:2015-09-21 Revised:2016-03-23 Online:2016-07-20 Published:2016-07-28
Supported by:
The National Natural Science Foundation of China(Nos.41274004;41274005;41372375)

摘要/Abstract

摘要： 根据InSAR观测量对南北向形变不敏感的特点，将内插GPS数据得到的南北向形变场信息和InSAR监测数据进行集成和融合解算，提取三维形变场。该方法有效避免了因直接忽略南北向形变而带来的精度影响问题，较好地改善了垂向形变场的反演精度。以西安市作为研究区域，融合EnviSat ASAR、ALOS PALSAR及GPS数据，反演西安市2009-2010年在东西向和垂向的绝对的年平均形变速率场（形变场），并与11个水准监测结果进行比对，发现融合反演法不仅能提供三维形变场，而且反演的垂向精度明显优于忽略南北向形变后的反演形变结果，从而对西安市地表形变有更深入的认识。

关键词: InSAR, GPS, 数据融合, 形变场, 系统偏差

Abstract: According to the character that InSAR observations are insensitive to deformations of north direction, it is proposed that inferring three dimensional deformations by combing north-south deformation field from GPS interpolation with InSAR results.The proposed method effectively avoids the effects of ignoring north-south deformation information, well improves the accuracy of vertical deformation. Taking the Xi'an city as the research area, combining EnviSat ASAR, ALOS PALSAR and GPS data, inferring absolute deformation rate filed of east-west and vertical directions, contrast of the deformation with 11 leveling points shows that the integration not only be capable of providing three dimensional deformation field but also attain more accurate vertical results compared with ignoring north-south deformation. The result will help acknowledge the Xi'an geological background.

Key words: InSAR, GPS, data integration, deformation field, system deviation

中图分类号:

P228

王霞迎, 张菊清, 张勤, 赵超英. 升降轨InSAR与GPS数据集成反演西安形变场[J]. 测绘学报, 2016, 45(7): 810-817.

WANG Xiaying, ZHANG Juqing, ZHANG Qin, ZHAO Chaoying. Inferring Multi-dimensional Deformation Filed in Xi'an by Combining InSAR of Ascending and Descending Orbits with GPS Data[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(7): 810-817.

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升降轨InSAR与GPS数据集成反演西安形变场

Inferring Multi-dimensional Deformation Filed in Xi'an by Combining InSAR of Ascending and Descending Orbits with GPS Data

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