A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy

Wenjia Yan; Yuan Zhang; Tianpeng Yang; Xiaohui Liu

doi:doi:10.11648/j.ajrs.20190701.13

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A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy

Wenjia Yan, Yuan Zhang, Tianpeng Yang, Xiaohui Liu

Published in American Journal of Remote Sensing (Volume 7, Issue 1)

Received: 11 July 2019 Accepted: 31 July 2019 Published: 20 September 2019

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Abstract

Accurate simulation of microwave scattering characteristics of wheat canopy can provide valuable insights into the scattering mechanisms of wheat crops. In this study, a wheat canopy scattering model (WCSM) was developed on a basis of first-order microwave radiative transfer equation. Several WCSM inputs, including wheat canopy and soil parameters, were measured in situ at the time (or near the time) of the satellite observation. The backscattering coefficients of wheat fields were then simulated at various incident angles and polarization modes. Four C-band quad-polarized (Radarsat-2 and Gaofen-3) SAR data were used to evaluate the WCSM performance in four key growth stages of winter wheat from stem elongation to ripening in 2017. Results showed that the WCSM simulated backscattering coefficients of wheat fields with error lower than 1.8 dB. This study demonstrates that the proposed WCSM is effective in characterizing the C-band backscatter features of wheat crops for various growth phases. It also indicated that the operational potential of C-band satellite SAR systems such as the Radarsat-2 and the China Gaofen-3 SAR in monitoring wheat growth for food safety in important agricultural regions.

Published in	American Journal of Remote Sensing (Volume 7, Issue 1)
DOI	10.11648/j.ajrs.20190701.13
Page(s)	13-24
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Wheat Canopy, Wheat Canopy Scattering Model (WCSM), Synthetic Aperture Radar (SAR), C-band, Backscatter, Simulation

References

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APA Style

Wenjia Yan, Yuan Zhang, Tianpeng Yang, Xiaohui Liu. (2019). A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. American Journal of Remote Sensing, 7(1), 13-24. https://doi.org/10.11648/j.ajrs.20190701.13

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ACS Style

Wenjia Yan; Yuan Zhang; Tianpeng Yang; Xiaohui Liu. A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. Am. J. Remote Sens. 2019, 7(1), 13-24. doi: 10.11648/j.ajrs.20190701.13

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AMA Style

Wenjia Yan, Yuan Zhang, Tianpeng Yang, Xiaohui Liu. A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. Am J Remote Sens. 2019;7(1):13-24. doi: 10.11648/j.ajrs.20190701.13

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@article{10.11648/j.ajrs.20190701.13,
  author = {Wenjia Yan and Yuan Zhang and Tianpeng Yang and Xiaohui Liu},
  title = {A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy},
  journal = {American Journal of Remote Sensing},
  volume = {7},
  number = {1},
  pages = {13-24},
  doi = {10.11648/j.ajrs.20190701.13},
  url = {https://doi.org/10.11648/j.ajrs.20190701.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajrs.20190701.13},
  abstract = {Accurate simulation of microwave scattering characteristics of wheat canopy can provide valuable insights into the scattering mechanisms of wheat crops. In this study, a wheat canopy scattering model (WCSM) was developed on a basis of first-order microwave radiative transfer equation. Several WCSM inputs, including wheat canopy and soil parameters, were measured in situ at the time (or near the time) of the satellite observation. The backscattering coefficients of wheat fields were then simulated at various incident angles and polarization modes. Four C-band quad-polarized (Radarsat-2 and Gaofen-3) SAR data were used to evaluate the WCSM performance in four key growth stages of winter wheat from stem elongation to ripening in 2017. Results showed that the WCSM simulated backscattering coefficients of wheat fields with error lower than 1.8 dB. This study demonstrates that the proposed WCSM is effective in characterizing the C-band backscatter features of wheat crops for various growth phases. It also indicated that the operational potential of C-band satellite SAR systems such as the Radarsat-2 and the China Gaofen-3 SAR in monitoring wheat growth for food safety in important agricultural regions.},
 year = {2019}
}

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TY  - JOUR
T1  - A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy
AU  - Wenjia Yan
AU  - Yuan Zhang
AU  - Tianpeng Yang
AU  - Xiaohui Liu
Y1  - 2019/09/20
PY  - 2019
N1  - https://doi.org/10.11648/j.ajrs.20190701.13
DO  - 10.11648/j.ajrs.20190701.13
T2  - American Journal of Remote Sensing
JF  - American Journal of Remote Sensing
JO  - American Journal of Remote Sensing
SP  - 13
EP  - 24
PB  - Science Publishing Group
SN  - 2328-580X
UR  - https://doi.org/10.11648/j.ajrs.20190701.13
AB  - Accurate simulation of microwave scattering characteristics of wheat canopy can provide valuable insights into the scattering mechanisms of wheat crops. In this study, a wheat canopy scattering model (WCSM) was developed on a basis of first-order microwave radiative transfer equation. Several WCSM inputs, including wheat canopy and soil parameters, were measured in situ at the time (or near the time) of the satellite observation. The backscattering coefficients of wheat fields were then simulated at various incident angles and polarization modes. Four C-band quad-polarized (Radarsat-2 and Gaofen-3) SAR data were used to evaluate the WCSM performance in four key growth stages of winter wheat from stem elongation to ripening in 2017. Results showed that the WCSM simulated backscattering coefficients of wheat fields with error lower than 1.8 dB. This study demonstrates that the proposed WCSM is effective in characterizing the C-band backscatter features of wheat crops for various growth phases. It also indicated that the operational potential of C-band satellite SAR systems such as the Radarsat-2 and the China Gaofen-3 SAR in monitoring wheat growth for food safety in important agricultural regions.
VL  - 7
IS  - 1
ER  -

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Author Information

Wenjia Yan

Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, China
Yuan Zhang

Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, China
Tianpeng Yang

Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, China
Xiaohui Liu

Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China

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APA Style

Wenjia Yan, Yuan Zhang, Tianpeng Yang, Xiaohui Liu. (2019). A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. American Journal of Remote Sensing, 7(1), 13-24. https://doi.org/10.11648/j.ajrs.20190701.13

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ACS Style

Wenjia Yan; Yuan Zhang; Tianpeng Yang; Xiaohui Liu. A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. Am. J. Remote Sens. 2019, 7(1), 13-24. doi: 10.11648/j.ajrs.20190701.13

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AMA Style

Wenjia Yan, Yuan Zhang, Tianpeng Yang, Xiaohui Liu. A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy. Am J Remote Sens. 2019;7(1):13-24. doi: 10.11648/j.ajrs.20190701.13

Copy | Download

@article{10.11648/j.ajrs.20190701.13,
  author = {Wenjia Yan and Yuan Zhang and Tianpeng Yang and Xiaohui Liu},
  title = {A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy},
  journal = {American Journal of Remote Sensing},
  volume = {7},
  number = {1},
  pages = {13-24},
  doi = {10.11648/j.ajrs.20190701.13},
  url = {https://doi.org/10.11648/j.ajrs.20190701.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajrs.20190701.13},
  abstract = {Accurate simulation of microwave scattering characteristics of wheat canopy can provide valuable insights into the scattering mechanisms of wheat crops. In this study, a wheat canopy scattering model (WCSM) was developed on a basis of first-order microwave radiative transfer equation. Several WCSM inputs, including wheat canopy and soil parameters, were measured in situ at the time (or near the time) of the satellite observation. The backscattering coefficients of wheat fields were then simulated at various incident angles and polarization modes. Four C-band quad-polarized (Radarsat-2 and Gaofen-3) SAR data were used to evaluate the WCSM performance in four key growth stages of winter wheat from stem elongation to ripening in 2017. Results showed that the WCSM simulated backscattering coefficients of wheat fields with error lower than 1.8 dB. This study demonstrates that the proposed WCSM is effective in characterizing the C-band backscatter features of wheat crops for various growth phases. It also indicated that the operational potential of C-band satellite SAR systems such as the Radarsat-2 and the China Gaofen-3 SAR in monitoring wheat growth for food safety in important agricultural regions.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - A Microwave Scattering Model for Simulating the C-Band SAR Backscatter of Wheat Canopy
AU  - Wenjia Yan
AU  - Yuan Zhang
AU  - Tianpeng Yang
AU  - Xiaohui Liu
Y1  - 2019/09/20
PY  - 2019
N1  - https://doi.org/10.11648/j.ajrs.20190701.13
DO  - 10.11648/j.ajrs.20190701.13
T2  - American Journal of Remote Sensing
JF  - American Journal of Remote Sensing
JO  - American Journal of Remote Sensing
SP  - 13
EP  - 24
PB  - Science Publishing Group
SN  - 2328-580X
UR  - https://doi.org/10.11648/j.ajrs.20190701.13
AB  - Accurate simulation of microwave scattering characteristics of wheat canopy can provide valuable insights into the scattering mechanisms of wheat crops. In this study, a wheat canopy scattering model (WCSM) was developed on a basis of first-order microwave radiative transfer equation. Several WCSM inputs, including wheat canopy and soil parameters, were measured in situ at the time (or near the time) of the satellite observation. The backscattering coefficients of wheat fields were then simulated at various incident angles and polarization modes. Four C-band quad-polarized (Radarsat-2 and Gaofen-3) SAR data were used to evaluate the WCSM performance in four key growth stages of winter wheat from stem elongation to ripening in 2017. Results showed that the WCSM simulated backscattering coefficients of wheat fields with error lower than 1.8 dB. This study demonstrates that the proposed WCSM is effective in characterizing the C-band backscatter features of wheat crops for various growth phases. It also indicated that the operational potential of C-band satellite SAR systems such as the Radarsat-2 and the China Gaofen-3 SAR in monitoring wheat growth for food safety in important agricultural regions.
VL  - 7
IS  - 1
ER  -

Copy | Download