中文摘要：

提出利用ScanSAR数据获取2008年3月21日新疆于田地震形变场的方法。利用ScanSAR干涉测量得到了幅宽约为400km×400km的于田地震形变场，同时得到了幅宽为100kmX100km的IM模式的干涉形变结果，并比较分析了两种模式的结果。通过ScanSAR干涉测量在于田地震中的应用，表明了ScanSAR干涉测量相比IM模式在巨大地震和板块运动等地球科学研究中具有更重要的意义和应用前景。

英文摘要：

There was a M7.3 earthquake at the boundary of Yutian County in Hotan Prefecture, Xinjiang, China, on March 21,2008, which is considerably destructive. The derived deformation field is an effective way to re- trieve the geophysical parameters and study the seismic mechanism. Taking the advantace of the wide swath and short revisit time, ScanSAR data were used for Yutian earthquake deformation field. First, the geolocation of Yu- tian areas was introduced. The process of ScanSAR interferometry was analyzed in detail. At last, the deformation field was derived with the extent of 400 km×400 km. At the same time, interferometry deformation filed of IM is derived with the extent of 100 km 100 km. With the application to ScanSAR interferometry in Yutian earthquake, it is significant for earth science research such as large earthquakes and crustal motion.