Sentinel-1 TOPS影像干涉处理与形变监测

Sentinel-1A IW模式可获取250 km宽的SAR影像，且噪声小、重访周期短。然而Sentinel-1A的TOPS成像方式造成SAR影像方位向多普勒频率变化较大，干涉数据处理对影像配准要求极高。提出基于DEM和精密轨道的TOPS影像高精度配准和拼接方法，实现TOPS影像干涉变形监测的数据处理，并利用升降轨TOPS影像数据获取门源地震雷达视线向一致的同震变形，证实本文数据处理方法的正确性。

Sentinel-1 TOPS SAR Interferometry and Deformation Monitoring

Sentinel-1A IW mode SAR image has a width of 250 km with low noise and a short revisit period. However, the TOPS image mode causes large Doppler frequency variations, which sets very stringent co-registration requirements in interferometry processing. In this paper, TOPS SAR image co-registration and burst merge are presented, and a process flow chart of deformation monitoring with TOPS SAR image is stated. Consistent deformation, with descending and ascending images of the Menyuan earthquake in Qinghai province, demonstrates the validity of the presented method.