Application of Interferometric SAR using Sentinel-1A for Flood Monitoring in South of Sulawesi, Indonesia

Jefriza, Jefriza and Yusoff, Izham Muhammad and Abir, Ismail and Syahreza, Saumi and Razi, Pakhrur and Rusdi, Muhammad (2019) Application of Interferometric SAR using Sentinel-1A for Flood Monitoring in South of Sulawesi, Indonesia. In: THE FIFTH INTERNATIONAL CONFERENCE OF INDONESIAN SOCIETY FOR REMOTE SENSING (ICOIRS) AND MAPIN CONGRESS “The Revolution Of Earth Observation For a Better Human Life”, 17-20 September 2019, Bandung.

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Abstract

n updated information of flood mapping that recently occurred in South Sulawesi is an important necessity for site policy makers. Mapping of flood area during or soon after the flooding event is tremendous hardwork. However using active-remote sensing namely InSAR (Interferometric Synthetic Aperture Radar) technique can overcome these limitatations. To achieve it, at least two radar images have to be obtained which is 1 image before and 1 image during/after flood event. We selected 2 images Sentinel-1A GRDH data for the same pass direction and the same time acquisitation with polarization VH (Vertical-Horizontal), 12 days of temporal baseline. The images were then processed by SNAP Toolbox. The results show that Sentinel-1A succeeded in detecting and monitoring flood event, where inundated of water in Tallo River is clearly visible in VH polarization.

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