写真測量とリモートセンシング
Online ISSN : 1883-9061
Print ISSN : 0285-5844
ISSN-L : 0285-5844
イネの3次元構造を考慮した多偏波マイクロ波散乱の4成分分解
須崎 純一河谷 嘉文
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ジャーナル フリー

2008 年 47 巻 6 号 p. 13-21

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In the present research, the authors examined the effects of the probability distribution of the target shape to the results of four component decomposition. The four component decomposition method decomposes polarimetric microwave data into four components, i.e. surface scattering, double bounce scattering, volume scattering and helix scattering. Prior to the present research, three dimensional structure of the rice was measured and modeled. The model was used to calculate the probability density funtion of the rice leaves at a viewpoint of arbitrary zenith and azimuth angles. With this probability density function, a covariance matrix of volume scattering for the rice was developed. This covariance matrix was embedded in the four component decomposition, and it was applied for the polarimetric X-band scattering data of rice, measured in an anechoic radio wave chamber in Niigata Univ. during September 25 to 26, 2007. It was found that the proposed four component decomposition produced more volume scattering and less surface scattering than the results produced by the standard four component analysis. As a result, it is concluded that the probability distribution of the target shape should be considered.

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© 社団法人 日本写真測量学会
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