Abstract:
The systematic availability of data from the Copernicus Sentinel-1 mission, allows redundancy of pairs considered during interferometric processing. In the present work t...Show MoreMetadata
Abstract:
The systematic availability of data from the Copernicus Sentinel-1 mission, allows redundancy of pairs considered during interferometric processing. In the present work the effect of DInSAR pairs' selection on the interferometric estimates, especially for the case of relatively fast moving landslides, is investigated. Interferometric findings over a well-monitored site are validated by in-situ geodetic measurements. It was documented that significant underestimation of motion occurs for DInSAR solutions utilizing pairs covering larger temporal spans, while displacement patterns are generally maintained. The above fact is attributed mainly to the magnitude of cumulated motion at temporally long interferograms, exceeding the physical limit of SAR interferometric techniques, with pronounced underestimation issues introduced. The need for an a priori knowledge of the expected motion rates for the optimum selection of interferometric combinations for measuring ground displacements is underlined.
Date of Conference: 28 July 2019 - 02 August 2019
Date Added to IEEE Xplore: 14 November 2019
ISBN Information: