Article

Clear-Cut Detection and Mapping Using Sentinel-1 Backscatter Coefficient and Short-Term Interferometric Coherence Time Series

Details

Citation

Akbari V & Solberg S (2022) Clear-Cut Detection and Mapping Using Sentinel-1 Backscatter Coefficient and Short-Term Interferometric Coherence Time Series. IEEE Geoscience and Remote Sensing Letters, 19, Art. No.: 4006405. https://doi.org/10.1109/lgrs.2020.3039875

Abstract
Forest clear-cut detection would be valuable for forest management, if it could be done routinely in near-real-time with a spaceborne synthetic aperture radar (SAR) system, which provides data all year and all-weather. In Sentinel-1 (S-1) time-series data, a forest clearing will lead to reduced backscatter intensity and increased interferometric SAR (InSAR) coherence magnitude. A time-series of 108 interferomtric wide (IW) Single look complex (SLC) S-1 images collected in 2016, 2017, and 2018 are used to study the potential for mapping clear-cut areas in eastern Ireland. We combined multitemporal InSAR coherence and backscatter intensity for the detection. This is an extension of previous studies that used either backscatter intensity or InSAR coherence magnitude, while we show the added value of both together. Coherence magnitude was the strongest predictor of the two.

Keywords
Clear-cut; expectationmaximization (EM); radar backscatter; repeat-pass coherence; Sentinel-1 (S-1); synthetic aperture radar (SAR)

Journal
IEEE Geoscience and Remote Sensing Letters: Volume 19

StatusPublished
FundersHorizon 2020 Research Project Distributed Integrated and Harmonized Forest Information for Bioeconomy Outlooks DIABOLO and Copernicus Program in Norway
Publication date31/12/2022
Publication date online31/12/2020
Date accepted by journal17/11/2020
URLhttp://hdl.handle.net/1893/33681
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN1545-598X
eISSN1558-0571

People (1)

People

Dr Vahid Akbari
Dr Vahid Akbari

Research Fellow, Computing Science