지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2012.10
- 수록면
- 80 - 98 (19page)
이용수
이 논문의 연구 히스토리 (11)
2012
마이크로파 산란계를 이용한 밀 생육 모니터링
김이현
,
홍석영
,
이경도
외 1명
한국토양비료학회 학술발표회 초록집
2012.10
학술대회자료
마이크로파 산란계를 이용한 벼, 콩 생육 모니터링
김이현
,
홍석영
,
이경도
외 2명
한국토양비료학회 학술발표회 초록집
2012.10
학술대회자료
마이크로파 산란계를 이용한 벼, 콩 생육단계 추정
김이현
,
홍석영
,
이훈열
외 2명
한국토양비료학회지
2012.08
학술저널
마이크로파 산란계를 이용한 토양수분함량 모니터링
김이현
,
홍석영
,
김선화
한국토양비료학회 학술발표회 초록집
2012.06
학술대회자료
레이더 산란계 후방산란계수를 이용한 토양수분함량 추정
김이현
,
홍석영
,
이재은
한국토양비료학회지
2012.04
학술저널
2010
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- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
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초록· 키워드
오류제보하기
Microwave remote sensing can help monitor the land surface water cycle and crop growth. In this paper, A ground-based multi-frequency(L-, C-, and X-band) polarimetric scatterometer system capable of making observations every 10 min was developed. This system was used to monitor the rice and soybean over an entire growth cycle. The polarimetric scatterometer components were installed inside an air-conditioned shelter to maintain constant temperature and humidity during the data acquisition period. Backscattering coefficients for the crop growing season were compared with biophysical measurements. In the rice, backscattering coefficients for all bands gradually increased in accordance with rice growth data and decreased with a reduction of leaf area index(LAI) and fresh weight. X-band backscattering coefficients observed dual-peak characteristics during rice growth stage and grain dry weight was closely related to the X-band backscattering coefficients. The correlation between backscattering and rice growth data decreased with increasing frequency. L-HH is the most preferable channel for the monitoring of fresh weight(r=0.97***), LAI(r=0.96***) and plant height(r=0.88***) while X-VV was the best for grain dry weight(r=0.94***) and grain water content(r=0.92***). In the soybean, backscattering coefficients for all frequencies and polarizations increased until DOY 271 and then decreased along with LAI, fresh weight, plant height, and vegetation water content(VWC). We examined the relationship between the backscattering coefficients of each band(frequency/polarization) and the various soybean growth parameters. The correlation between the different vegetation parameters and backscatter decreased with increasing frequency. From this analysis we concluded that L-band HH-polarization is the best suited for the monitoring of LAI(r=0.98***), and VWC(r=0.97***). The correlation between volumetric soil moisture content and backscatter was poor when the entire growth period was considered. However, we found that L-HH correlated well with soil moisture content(r=0.89***) when a threshold of VWC < 1.5 kg m-2 was used in the analysis. These results will be useful in understanding the scattering behavior of different frequencies in an agricultural field and help in the development of better vegetation and soil moisture content retrievals using current and future satellite missions including KOMPSAT-5 COSI(2012), PALSAR-2, and SMAP(2014).
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UCI(KEPA) : I410-ECN-0101-2014-521-000780848