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| Dual-Frequency Synthetic Aperture Radar for Deep Soil Moisture Estimation |
| Zhang Xiao-juan①;Zhang Wen-ji①②; Lu Xiao-rong①②;Kang Gao-jian①②; Fang Guang-you① |
| ①Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;②Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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Abstract The method of measuring deep soil moisture by VHF/UHF dual frequency multiple polarization Synthetic Aperture Radar (SAR) consisting of vector network analyzer is proposed. The backscattering mechanism of vegetation and soil at depth, dielectric properties of soil are presented. The simulation results of the backscattering of multilayered soil, dielectric properties of soil are given and the models are validated by special case of single layered soil.
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Received: 31 March 2006
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2007, Vol. 29 
