High-order Coherent Scattering Model for Vegetation with Fractal Structures

RAO Liting; ZHANG Xiaojuan; WANG Youcheng; FANG Guangyou

doi:10.11999/JEIT160095

Volume 38 Issue 10

Oct. 2016

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Article Navigation > Journal of Electronics & Information Technology > 2016 > 38(10): 2502-2508

Liu Ying, Liu Sanyang, Wu Jianping. Multicast routing algorithm for multimedia communication[J]. Journal of Electronics & Information Technology, 2002, 24(7): 948-953.

Citation:

RAO Liting, ZHANG Xiaojuan, WANG Youcheng, FANG Guangyou. High-order Coherent Scattering Model for Vegetation with Fractal Structures[J]. Journal of Electronics & Information Technology, 2016, 38(10): 2502-2508. doi: 10.11999/JEIT160095

Liu Ying, Liu Sanyang, Wu Jianping. Multicast routing algorithm for multimedia communication[J]. Journal of Electronics & Information Technology, 2002, 24(7): 948-953.

Citation:

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High-order Coherent Scattering Model for Vegetation with Fractal Structures

doi: 10.11999/JEIT160095

1.
2.
(Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China)

Funds:

The National Natural Science Foundation of China (61172017)

Received Date: 2016-01-21
Rev Recd Date: 2016-07-01
Publish Date: 2016-10-19

Abstract

Abstract

At low frequency, the assumption of independent scattering of the scatterers in vegetation medium is no longer valid. The coherent effect and near field interactions should be considered. In this paper, a high-order coherent scattering model for vegetation with fractal structure is presented. The fractal theory is employed to generate a realistic 3-D spatial structure of vegetation. The near field interaction between scatterers is formulated using an efficient algorithm based on the reciprocity theorem. For the coherent effect, every scatterer with a deterministic location is taken into account. The main scattering mechanisms are defined in the way of layered vegetation model, allowing better understanding of microwave interaction with trunk-crown structure. Good agreements are obtained from the comparisons of the theoretical predictions with the multifrequency and multipolarization measurement results of boreal forest. Through an extensive ground truth, theoretical analysis of the contribution of the scattering mechanisms for various frequencies, incident angles and vegetation structures is carried out. It is found that under specified conditions the vegetation scattering model can be simplified according to the main contribution scattering mechanism which can be applied to the inversion issue.
- Vegetation,
- Fractal structures,
- Coherent effect,
- Near field interaction,
- Backscattering.

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References(24)

References

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