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Applications of Geomatics in Civil Engineering pp 107–121Cite as

Surface Soil Moisture Retrieval Using C-Band Synthetic Aperture Radar (SAR) over Yanco Study Site, Australia—A Preliminary Study

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Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 33))

Abstract

The motto of this work is to evaluate retrieval of surface soil moisture (5 cm) using Sentinel-1a C-band data Synthetic Aperture Radar (SAR). Data for this study is collected from Yanco Study site, Australia. Yanco study site consists of 37 soil moisture measuring stations at every 20 min interval for various soil depths and it also provides other Hydro-Meteorological information. SAR backscattered energy is a function of soil roughness and soil moisture. Surface roughness is eliminated using change detection approach. The R2 performance statistics revealed that between Backscattered energy and NDVI there is no relation. Volumetric soil moisture and backscattered energy showed a positive correlation with R2 = 0.57 and 0.43 for VH and VV polarization. Dielectric constant also showed a positive correlation with backscattered energy having R2 = 0.62 and 0.38 for VH and VV polarization respectively. By taking into account of all these affecting parameters, a regional Semi-empirical model is developed to retrieve surface Soil moisture over the study area.

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Authors and Affiliations

  1. NITK, Surathkal, Mangalore, 575025, India

    G. Punithraj, Umesh Pruthviraj & Amba Shetty

Authors
  1. G. Punithraj
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  2. Umesh Pruthviraj
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  3. Amba Shetty
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Correspondence to G. Punithraj .

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Editors and Affiliations

  1. Civil Engineering Department, Indian Institute of Technology Roorkee, Roorkee, India

    Jayanta Kumar Ghosh

  2. Sao Carlos School of Engineering, University of Sao Paulo, Sao Carlos, São Paulo, Brazil

    Irineu da Silva

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Punithraj, G., Pruthviraj, U., Shetty, A. (2020). Surface Soil Moisture Retrieval Using C-Band Synthetic Aperture Radar (SAR) over Yanco Study Site, Australia—A Preliminary Study. In: Ghosh, J., da Silva, I. (eds) Applications of Geomatics in Civil Engineering. Lecture Notes in Civil Engineering , vol 33. Springer, Singapore. https://doi.org/10.1007/978-981-13-7067-0_8

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  • DOI: https://doi.org/10.1007/978-981-13-7067-0_8

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-7066-3

  • Online ISBN: 978-981-13-7067-0

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