高分解能Xバンド２偏波SAR画像による水稲の生育・収量の調査

DOI Web Site 被引用文献3件 参考文献6件

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  • Investigation of the growth and yield of rice utilizing dual polarization SAR images of high resolution X-band
  • コウブンカイノウ Xバンド 2 ヘンパ SAR ガゾウ ニ ヨル スイトウ ノ セイイク ・ シュウリョウ ノ チョウサ

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This study was conducted to examine the possibility of monitoring growth and yield estimation of rice utilizing high resolution SAR satellite data (X-band, dual-polarized). We considered a quantitative understanding of the relationship between changes in the backscattering coefficient and changes in growth and yield of rice.<br>Results indicated that with 11 day repeat pass of TerraSAR-X satellite data, it was possible to observe the time series changes of the backscattering coefficient of rice growth. The polarized TerraSAR-X data indicated the possibility to estimate growth conditions of the stems and plant height due to high correlation between TerraSAR-X data and the stems, the rate of vegetation cover during phonological stage. In addition, there was a correlation between the HH polarization and grains, ripening rate of the crop growth period from heading stage to pre-maturing stage. The yield was correlated with the HH polarization of 49° angle of incidence at the heading stage and VV polarization or HH×VV dB of 49° angle of incidence before maturation stage.<br>Utilizing the SAR data (X-band, dual-polarized) of the time series was highly effective for monitoring the plant growth and yield estimation.<br>In the future work, based on the relationship between the crop growth, yield and obtaining the backscattering coefficients during multiple years, considerations of climatic changes, it would be significant to develop a comprehensive crop growth model derived from the regression equations to estimate the SAR backscattering coefficients. Additionally, we intend to expand the growth models for yield predictions.

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