中文摘要：

为探测意大利拉奎拉2009年4月6日发生的6.3级地震的地表形变量,采用两轨法对该地震形变进行了研究。首先利用ENVISAT ASAR雷达的两组升轨与降轨数据,对比了不同相位解缠方法对研究结果的影响,然后探索了ASTER GDEM在两轨法中的应用,最后成功得到拉奎拉6.3级地震在雷达视线方向的形变图。研究表明,在DInSAR技术中采用合适的相位解缠的方法能够提高成果的精度。正确预处理之后的ASTER GDEM数据可以应用于两轨法雷达干涉测量中,其在雷达干涉测量中有一定的应用潜力。拉奎拉6.3级地震的地表形变以垂直位移为主,且垂直位移形变以下沉为主。

英文摘要：

In order to measure the ground surface deformation that induced by L＇Aquila Mw 6. 3 Earthquake in Italy on April 6,2009,two pass method is applied in the study of coseismic deformation. Firstly,two groups of ascending and descending radar acquisitions from ENVISAT ASAR are processed as the primary data and the influence on experimental results based on different phase unwrapping method is compared. Secondly,ASTER GDEM is explored in two pass method. Lastly,deformation maps about L＇Aquila 6. 3 earthquake in radar line of sight direction are obtained successfully. Results have shown that the use of appropriate phase unwrapping method in DInSAR technology can improve the accuracy of the outcome obviously. With the correct data preprocessing,ASTER GDEM can be applied with two pass method in radar interferometry and it has great potential. Surface deformation of L＇Aquila Mw 6. 3 Earthquake is mainly vertical displacement. Moreover,this kind of vertical displacement is mainly settlement.