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Analyses of Time Series InSAR Signatures for Land Cover Classification: Case Studies over Dense Forestry Areas with L-Band SAR Images

1
Department of Geoinformatics, University of Seoul, Seoulsiripdaero 163, Dongdaemum-gu, Seoul 02504, Korea
2
Disaster Information Research Division, National Disaster Management Research Institute, 365 Jongga-ro, Jung-gu, Ulsan 44538, Korea
3
Department of Land Economics, National Chengchi University, No. 64, Sec. 2, Zhinan Road, Wenshan District, Taipei 116, Taiwan
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(12), 2830; https://doi.org/10.3390/s19122830
Received: 10 May 2019 / Revised: 11 June 2019 / Accepted: 18 June 2019 / Published: 25 June 2019
(This article belongs to the Section Remote Sensors)
As demonstrated in prior studies, InSAR holds great potential for land cover classification, especially considering its wide coverage and transparency to climatic conditions. In addition to features such as backscattering coefficient and phase coherence, the temporal migration in InSAR signatures provides information that is capable of discriminating types of land cover in target area. The exploitation of InSAR signatures was expected to provide merits to trace land cover change in extensive areas; however, the extraction of suitable features from InSAR signatures was a challenging task. Combining time series amplitudes and phase coherences through linear and nonlinear compressions, we showed that the InSAR signatures could be extracted and transformed into reliable classification features for interpreting land cover types. The prototype was tested in mountainous areas that were covered with a dense vegetation canopy. It was demonstrated that InSAR time series signature analyses reliably identified land cover types and also recognized tracing of temporal land cover change. Based on the robustness of the developed scheme against the temporal noise components and the availability of advanced spatial and temporal resolution SAR data, classification of finer land cover types and identification of stable scatterers for InSAR time series techniques can be expected. The advanced spatial and temporal resolution of future SAR assets combining the scheme in this study can be applicable for various important applications including global land cover changes monitoring. View Full-Text
Keywords: InSAR; time series; land cover classification InSAR; time series; land cover classification
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MDPI and ACS Style

Yun, H.-W.; Kim, J.-R.; Choi, Y.-S.; Lin, S.-Y. Analyses of Time Series InSAR Signatures for Land Cover Classification: Case Studies over Dense Forestry Areas with L-Band SAR Images. Sensors 2019, 19, 2830. https://doi.org/10.3390/s19122830

AMA Style

Yun H-W, Kim J-R, Choi Y-S, Lin S-Y. Analyses of Time Series InSAR Signatures for Land Cover Classification: Case Studies over Dense Forestry Areas with L-Band SAR Images. Sensors. 2019; 19(12):2830. https://doi.org/10.3390/s19122830

Chicago/Turabian Style

Yun, Hye-Won, Jung-Rack Kim, Yun-Soo Choi, and Shih-Yuan Lin. 2019. "Analyses of Time Series InSAR Signatures for Land Cover Classification: Case Studies over Dense Forestry Areas with L-Band SAR Images" Sensors 19, no. 12: 2830. https://doi.org/10.3390/s19122830

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