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Global change has significant impact on permafrost region in the Tibet Plateau. Soil moisture of permafrost is the important factor influencing the energy flux, ecosystem and hydrologic process. Synthetic aperture radar (SAR) provides us a powerful tool to monitor the soil moisture. In this study, 19 scenes of German TerraSAR-X data are used to retrieve the soil moisture in Beiluhe, Northern Tibet...
The model of soil surface scattering is implemented in the paper. The ray tracing (RT) model is introduced to solve the soil scattering problem. The soil surface is characterized by the rms of its height distribution relating to wavelength and by the space correlation length of an extracted profile from this surface. The RT result is compared with Kirchhoff approximation (KA) result, and the result...
The high frequency method can deal with the metal material structure and get a good result. The other method should be used to describe the process of the shadow in the radar image. These shadows are important feature in the radar image. The stability of the shadow contour makes it helpful for the recognition process of the target body. Deterministic and statistical methods play different parts in...
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