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Inversion of dielectric constant and moisture of bare soil surface from backscattering coefficient

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Abstract

An inverse method of dielectric constant and moisture of bare wet soil surface from backscattering coefficients is presented, which is based upon the small perturbation model of electromagnetic wave scattering from rough surfaces and the empirical and dielectric mixing models of wet soil. Some sets of curves which describe the relation between the moisture of soil and the ratio of like polarization backscattering coefficients σvv and σhh are obtained, and some principles on how to choose the incident frequencies and the incident angles of the electromagnetic wave are given. Analysis and calculation show that the main advantage of this inverse method is its efficiency and simplicity.

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Authors and Affiliations

  1. Department of Electronic Engineering, Tsinghua University, 100084, Beijing, China

    Zongqian Li

  2. Institute of Electronics, Chinese Academy of Sciences, 100080, Beijing, China

    Kongyu Feng

Authors
  1. Zongqian Li
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  2. Kongyu Feng
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Project supported by the National Natural Science Foundation of China.

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Li, Z., Feng, K. Inversion of dielectric constant and moisture of bare soil surface from backscattering coefficient. Sci. China Ser. E-Technol. Sci. 40, 317–323 (1997). https://doi.org/10.1007/BF02916607

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  • DOI: https://doi.org/10.1007/BF02916607

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