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2009年4月6日意大利拉奎拉地区发生Mw6.4级地震。SAR系统已经被证明在分析地震影响以及震前位移方面具有很高的价值。由于形变速率缓慢,震后事件的研究需要多时相差分干涉处理。COSMO/SKYMED星座由4颗X波段合成孔径雷达卫星组成,同时提供民用数据,我们获得了该地区一系列升轨数据,通过两种多时相干涉处理方法(SPINUA法及SBAS法)得到了震后形变图。该项工作在MORFEO框架下进行,MORFEO项目致力于利用地球观测数据监测滑坡。文中对与震后活动有关的位移图进行了解译,结果清楚地展示了利用COSMO/SKYMED星座进行灾害监测的潜力。
Mw6.4 earthquake occurred in L’Aquila, Italy, April 6, 2009. The SAR system has proven to be of great value in analyzing the effects of earthquakes and pre-earthquake displacements. Due to the slow deformation rate, the study of post-earthquake events requires multi-temporal differential interference processing. The constellation COSMO / SKYMED consists of four X-band synthetic aperture radar satellites and provides civilian data. We have obtained a series of orbital data in the area obtained by two multiphase interference processing methods (SPINUA method and SBAS method) Deformation map. The work is carried out under the framework of the MORFEO project, which is dedicated to monitoring landslides using Earth observation data. The displacement maps related to post-earthquake activities were interpreted in the paper and the results clearly demonstrated the potential of using COSMO / SKYMED constellations for disaster monitoring.