Properties of L-band differential InSAR for monitoring mining-induced subsidence in coalfield of Jining, Northern China
来源期刊：中南大学学报(英文版)2014年第4期
论文作者：TAO Qiu-xiang(陶秋香) LIU Gou-lin(刘国林)
文章页码：1508 - 1517
Key words：L-band differential InSAR; ALOS PALSAR; mine subsidence monitoring
Abstract: The properties and feasibility of L-band differential InSAR for detecting and monitoring mining-induced subsidence were systematically analyzed and demonstrated. The largest monitored subsidence gradient of 7.9×10-3 and magnitude of 91 cm were firstly derived by theoretical derivation. Then, the stronger phase maintaining capacity and weaker sensitivity to minor land subsidence compared with C-band DInSAR were illustrated by phase simulation of the actual mine subsidence. Finally, the data processing procedure of two-pass DInSAR was further refined to accurately observe subsidence of a coalfield of Jining in Northern China using 7 ALOS PALSAR images. The largest monitored subsidence magnitude of 39.22 cm and other properties were better investigated by testing results interpretation and subsidence analysis, and the absolute difference varying from 0.5 mm to 17.9 mm was obtained by comparison with leveling-measured subsidence. All of results show that L-band DInSAR technique can investigate the location, amount, area and other detailed subsidence information with relatively higher accuracy.
TAO Qiu-xiang(陶秋香)1, 2, LIU Gou-lin(刘国林)1
(1. Geomatics College, Shandong University of Science and Technology, Qingdao 266590, China;
2. Key Laboratory of Surveying and Mapping Technology on Island and Reef of National Administration of Surveying,
Mapping and Geoinformation, Qingdao 266590, China)
Abstract:The properties and feasibility of L-band differential InSAR for detecting and monitoring mining-induced subsidence were systematically analyzed and demonstrated. The largest monitored subsidence gradient of 7.9×10-3 and magnitude of 91 cm were firstly derived by theoretical derivation. Then, the stronger phase maintaining capacity and weaker sensitivity to minor land subsidence compared with C-band DInSAR were illustrated by phase simulation of the actual mine subsidence. Finally, the data processing procedure of two-pass DInSAR was further refined to accurately observe subsidence of a coalfield of Jining in Northern China using 7 ALOS PALSAR images. The largest monitored subsidence magnitude of 39.22 cm and other properties were better investigated by testing results interpretation and subsidence analysis, and the absolute difference varying from 0.5 mm to 17.9 mm was obtained by comparison with leveling-measured subsidence. All of results show that L-band DInSAR technique can investigate the location, amount, area and other detailed subsidence information with relatively higher accuracy.
Key words:L-band differential InSAR; ALOS PALSAR; mine subsidence monitoring
