Sentinel-1 interferometry system in the high-performance computing environment

Abstract

This paper describes the architecture of the system for monitoring deformations based on interferometrical processing of Sentinel-1 satellite data using specific software installed at the facility of the Czech national supercomputing center (IT4Innovations). The system is ready for Big Data storage and processing and leads to partially autonomous competitive environment for following deformation monitoring projects. The processing chain is prepared to be performed using Sarproz software where the reader of specific Sentinel-1 Terrain Observation with Progressive Scans in azimuth data was newly introduced—the reader implementation is described in the paper. First application of the system has been applied to subsiding area of Konya city in Turkey. The processing was performed using a small fraction of the supercomputer power, i.e. using 23 processors running at 2.5 GHz speed, and led to results estimating subsidence in Konya city during 2014– 2015—a subsidence of Konya buildings in the rate of more than 6 cm/year has been evaluated, that is slightly more than the expected values from previous analyzes. The processing strategy of the described system is demonstrated in this case study.