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Estimation of Rice and Soybean Growth Stage Using a Microwave Scatterometer
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 Title & Authors
Estimation of Rice and Soybean Growth Stage Using a Microwave Scatterometer
Kim, Yi-Hyun; Hong, Suk-Young; Lee, Hoon-Yol; Lee, Jae-Eun; Lee, Kyung-Do;
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 Abstract
Microwave radar can penetrate cloud cover regardless of weather conditions and can be used day and night. Especially a A ground-based polarimetric scatterometer operating at multiple frequencies can continuously monitor the crop conditions. We analyzed scattering characteristics of rice and soybean using pauli decomposition method. Surface scattering () is the dominant component over the entire stages for all bands and pauli decomposition value was the highest for L-band. Double bounce scattering () and volume scattering () were approximately equal for C-band and volume scattering was higher than double bounce scattering for X-band in rice field. In soybean, double bounce scattering becomes higher than volume scattering during the R2 stage (DOY 224) and there was a significant difference between the two components after the R4 stage (DOY 242) for L-band. The maximum growth stage of soybean can also be detected using L-band double bounce scattering. The peak of double bounce effect coincides with the peak of growth biophysical variables on DOY 271. We found that pauli decomposition can provide insight on the relative magnitude of different scattering mechanisms during the rice and soybean growth cycle.
 Keywords
Microwave remote sensing;Pauli decomposition;Surface scattering;Double bounce scattering;Volume scattering;
 Language
Korean
 Cited by
1.
마이크로파 산란계를 이용한 밀 생육 추정,김이현;홍석영;이경도;장소영;

한국토양비료학회지, 2013. vol.46. 1, pp.23-31 crossref(new window)
1.
Estimation of Wheat Growth using a Microwave Scatterometer, Korean Journal of Soil Science and Fertilizer, 2013, 46, 1, 23  crossref(new windwow)
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