Subsidence monitoring in urban area using multi-temporal InSAR data: a case study in Ching

被引:3
作者
Wang, Y [1 ]
Liao, MS [1 ]
Li, DR [1 ]
Lin, H [1 ]
机构
[1] Wuhan Univ, State Key Lab Info Eng Surveying Mapping & Remote, Wuhan 430079, Peoples R China
来源
REMOTE SENSING FOR ENVIRONMENTAL MONITORING, GIS APPLICATIONS, AND GEOLOGY IV | 2004年 / 5574卷
关键词
InSAR; D-InSAR; multi-temporal data analysis; urban subsidence monitoring;
D O I
10.1117/12.565518
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
During the last decades, land subsidence has occurred in three main river deltas of China, especially in some metropolitans. With the assistance of some geodetic technologies, such as digital leveling, GPS, total station, and so on, repeat-pass radar interferometry has the capability to monitor land subsidence in 3 dimensions with high accuracy. The potential and limitation of repeat-pass radar interferometry are still being evaluated till now. Considering the operational application of this technique, this paper describes applications of D-InSAR the urban subsidence of China. The case study with a small data stack in Hong Kong presents about 1cm height change in two test sites. The two test sites have mainly been investigated, and some of the key steps of this technique have been discussed in detail. The evolution of the D-InSAR and the future research involve more accurate and robust measurement with large data stacks in a long time series.
引用
收藏
页码:323 / 330
页数:8
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