Duc Anh Ngo; Anh Tuan Vu; Thu Hang Nguyen; Thanh Binh Nguyen

doi:10.54491/jgac.2019.41.295

Applied research | No. 41 (2019)

Combined use of sentinel-1 and RCR for deforestation detection: A case study in Quang Son commune, Dak Glong district, Dak Nong province

DOI: 10.54491/jgac.2019.41.295

10.54491/jgac.2019.41.295

Published 2019-09-01

Duc Anh Ngo⁺⁻
Anh Tuan Vu⁺⁻
Thu Hang Nguyen⁺⁻
Thanh Binh Nguyen⁺⁻

Duc Anh Ngo

Vietnam National Space Center (VNSC) – Vietnam Academy of Science andTechnology (VAST)

Anh Tuan Vu

Vietnam National Space Center (VNSC) – Vietnam Academy of Science andTechnology (VAST)

Thu Hang Nguyen

Vietnam Institute of Geodesy and Cartography

Thanh Binh Nguyen

The International Center for Tropical Agriculture (CIAT)

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How to Cite

Ngo, D. A., Vu, A. T., Nguyen, T. H., & Nguyen, T. B. (2019). Combined use of sentinel-1 and RCR for deforestation detection: A case study in Quang Son commune, Dak Glong district, Dak Nong province. Journal of Geodesy and Cartography, (41). https://doi.org/10.54491/jgac.2019.41.295

Abstract

In recent years, deforestation in Dak Nong hashad a complicated situation. It is essential to conduct forest monitoringfrequently and continuously. Frequent forest monitoring using optical data haslow efficiency due to the impacts of tropical climate conditions and cloudcover. In order to address the need for timely update on deforestation, usingSAR (Synthetic Aperture Radar) time series can monitor the forest monthly .Sentinel -1 with a 12-day repeat cycle in both ascending and descending pass(one day) meets the requirement for data continuity as well as not beingdependent on the weather. In this study, the authors analyzed theback-scattering from Sentinel-1time series, using the ratio of RCR (radarchange ratio) to detect unusual changes in forest cover, the results arerecorded from both ascending and descending orbit that increased the accuracy,thereby making the monthly hot-spot deforestation mapping.

https://doi.org/10.54491/jgac.2019.41.295

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