| ??PSInSAR??????????????о? |
| |
| 引用本文： | 胡波,汪汉胜.??PSInSAR??????????????о?[J].大地测量与地球动力学,2010,30(2):34-39. |
| |
| 作者姓名： | 胡波 汪汉胜 |
| |
| 作者单位： | 1. 中国科学院测量与地球物理研究所动力大地测量学重点实验室,武汉,430077;中国科学院研究生院,北京,100049
2. 中国科学院测量与地球物理研究所动力大地测量学重点实验室,武汉,430077 |
| |
| 基金项目： | 国家杰出青年科学基金，国家自然科学基金，中国科学院优秀博士专项基金 |
| |
| 摘 要： | ??????????????????????????α????????????????????????ERS1/2????????InSAR????????????????PS???????????????1992??2002???????????????????????????????????????????????9.3 mm/a??????????????????н?????????
|
| 关 键 词： | ???????????????? ????????? ???? ????α? ???? |
MONITORING GROUND SUBSIDENCE WITH PERMANENT SCATTERERS INTERFEROMETRY |
| |
| Hu Bo,Wang Hansheng.MONITORING GROUND SUBSIDENCE WITH PERMANENT SCATTERERS INTERFEROMETRY[J].Journal of Geodesy and Geodynamics,2010,30(2):34-39. |
| |
| Authors: | Hu Bo Wang Hansheng |
| |
| Institution: | 1)Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics, CAS, Wuhan 4300772)Graduate School of Chinese Academy of Sciences, Beijing 100049 |
| |
| Abstract: | PSInSAR makes it possible to overcome both phase decorrelations and atmospheric delays, and shows a properous future for improving the accuracy of monitoring crustal movement. However, the key steps for the data processing are not well developed such as PS detection, network construction and model estimation. Therefore, a three-thresholding algorithm i.e., a method to serially execute correlation-coefficient thresholding, amplitude dispersion index thresholding and amplitude index thresholding is proposed and implemented to improve the quality of PS detection. In addition, a method with tree-structure is proposed to estimate the PS absolute terrain error and linear velocity of deformation. Finally, a case study in Shanghai experimental area is finished. The InSAR data sets from ERS1/2 and the new method proposed are utilized to successfully dectect the PS points and obtain the subsidence during the period from 1992 to 2002,that the regionally average value of the subsidence is 9.3 mm/a. The new results are basically in accordance with that from the levelling. |
| |
| Keywords: | DInSAR permanent scatterers decorrelation surface deformation subsidence |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 |
