雷达差分干涉测量空地一体化的大型滑坡形变灾害监测理论与方法

项目名称： 雷达差分干涉测量空地一体化的大型滑坡形变灾害监测理论与方法

项目编号： No.41274017

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 何秀凤

作者单位： 河海大学

项目金额： 70万元

中文摘要： 高边坡的滑坡预警和防治是当前我国大型水电工程建设中的一个关键技术难题。本项目通过探索地基GB-InSAR与空基InSAR信息综合的理论和方法，为复杂环境下的大型水电工程形变灾害监测提供一种时空连续的新方法，降低目前水电工程以离散点信息代替整体而引发的滑坡潜在风险。项目通过改进并优化现有时序InSAR分析方法，探求人工地物、自然地表的失相关规律；开发空、地两用人工角反射器，构造自适应的极小极大最优滤波器，解决大型水电工程复杂环境下模型参数和噪声参数不确定性问题，提供空地一体化的大范围、连续形变监测新方法。本项目还将利用丰富的GPS和InSAR等形变观测数据及地质资料，结合影响滑坡变形的内外动力因素的分析，建立微小形变的滑坡动态模型，为研究复杂环境下边坡稳定性并预测其未来变化提供科学的依据，进一步提高我国对滑坡等地质灾害的预测及防治能力。

中文关键词： 合成孔径雷达干涉测量技术；全球定位系统；变形监测；时序分析；滑坡

英文摘要： The early warning and prevention of the landslide failures of steep slopes is a key technical problem in the large scale hydropower constructions in China. This project will aim at providing a new continuous system solution in both time and space by combining the ground-based and space-born InSAR techniques and reducing the risks of using discrete points information instead of full-scale monitoring at current development stage of hydropower engineering. Improvements and developments will be taken to optimize the current InSAR time-series analysis methods and explore the regular pattern of man-made and natural targets. A new type of man-made corner reflector which can be used in both ground and space based SAR image system will be investigated and the minimax optimal filter algorithm will be developed to solve the parameters and noise uncertainties under complicated conditions of large hydropower constructions. Meanwhile, accompanied with the inherent and external dynamics analysis of disasters, various deformation information from GPS observation, InSAR results and geological resources will be used to establish a landslide dynamic model of slight deformation. This research will provide a scientific basis for the slope stability analysis and prediction in complex environment as well as improve the capabilities of

英文关键词： InSAR；GPS；Deformation monitoring；Time series analysis；Landslide