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Remote Sensing Technology and Application  2005, Vol. 20 Issue (1): 121-126    DOI: 10.11873/j.issn.1004-0323.2005.1.121
    
Study of Backscattering Coefficients from Soybean Canopy by Combining Branch Model and Antenna Array Theory
DU Yang, JIANG Qin, PENG Liang , XU Tao, LUO Ying-liang ,YAN Wen-zhe, WANG Zhuo-yuan, GAO Xin,WANG Hao-gang, KONG Jin-ou
( 1. The Zhejiang University Branch of International Electromagnetics Academy of Sciences, Hangzhou 310058, China; 2. Massachusetts Institute of Technology , Boston 02139-4307, America)
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Abstract  

A new method is proposed for studying the polarimetric backscattering coefficients from a soybean canopy. This method combines the branch model, which emphasizes the significance of vegetation architecture and coherent effect, and the CP-PACT model, which adopts antenna array concept to account for the inter-scatterer interaction, an appropriate technique to be applied to agricultural crops like soybean where semi-periodic plant arrangement is the norm of agricultural practice. Moreover, in relating the Eulerian angles that describe the orientation of an axissymmetric scatterer to the elation and azimuth angles of the spherical coordinate system, the new association suggested in this study makes more physical sense.The effectiveness of this proposed method is validated by good agreement between the predicted backscattering coefficients and measurement data.

Key words:  Branch model      Antenna array theory      Backscattering coefficients      Coherent effect      Vegetation architecture     
Received:  13 September 2004      Published:  16 November 2011
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Cite this article: 

DU Yang, JIANG Qin, PENG Liang , XU Tao, LUO Ying-liang ,YAN Wen-zhe, WANG Zhuo-. Study of Backscattering Coefficients from Soybean Canopy by Combining Branch Model and Antenna Array Theory. Remote Sensing Technology and Application, 2005, 20(1): 121-126.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2005.1.121     OR     http://www.rsta.ac.cn/EN/Y2005/V20/I1/121

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