利用两轨法D-InSAR技术获取太原地区地面垂直形变场

Ground Vertical Deformation Field of Taiyuan Area Obtained by Two-pass D-InSAR Technique

采用欧空局提供的两景ENVISAT ASAR影像数据,结合美国NASA提供的免费SRTM DEM,利用两轨法D-InSAR技术获取了太原地区2003年8月—2004年11月的地面垂直形变场,结果显示与水准测量具有较好的一致性。实验表明,相比水准测量,D-InSAR技术能够以更高的分辨率提取区域、大范围的地表形变,具有巨大的潜力和优势。

Based on two ENVISAT ASAR images from European Space Agency as well as some SRTM DEM provided freely by NASA,US,the ground vertical deformation field of Taiyuan area from August,2003 to November,2004 is figured out by using two-pass D-InSAR technique.The result indicates that the deformation field has good consistency with that obtained from leveling.Comparing with leveling,D-InSAR technique can extract the ground deformation in larger area with higher resolution.Therefore,it has enormous potentiality and advantage in monitoring the crustal deformation.