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NTIS 바로가기대한원격탐사학회지 = Korean journal of remote sensing, v.36 no.3, 2020년, pp.487 - 501
김서연 (부경대학교 지구환경시스템과학부 공간정보시스템공학전공) , 이수진 (부경대학교 지구환경시스템과학부 공간정보시스템공학전공) , 이양원 (부경대학교 지구환경시스템과학부 공간정보시스템공학전공)
As a viable option for retrieval of LST (Land Surface Temperature), this paper presents a DNN (Deep Neural Network) based approach using 148 Landsat 8 images for South Korea. Because the brightness temperature and emissivity for the band 10 (approx. 11-㎛ wavelength) of Landsat 8 are derived b...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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지표면온도란? | 지표면온도(Land Surface Temperature, LST)는 대기와 지표면 사이의 에너지 플럭스에 의해 결정되고 지표면과 대기의 경계면에서 열 전달을 유도하기 때문에(Jacob et al., 2004; Jin and Dickinson, 2010), 지표면 에너지수지와 물수지의 물리적 과정에서 가장 중요한 인자 중의 하나이다(Wan et al., 2004). | |
고해상도 지표면온도 산출실험에 효과적인 기법은? | , 2009; Tan et al., 2019) 인공지능 기법을 통한 비선형 모델링이 효과적일 것이며, 다양한 경우의 수와 복잡성에 대응을 위하여 대량의 위성영상을 활용할 필요가 있다. 그러나 최근 들어 위성 정보 활용에 있어 인공지능 기법의 효율성이 보고되고 있음에도 불구하고, 딥러닝 등 인공지능 기법을 활용한 고해상도 지표면온도 산출은 아직 시도된 사례가 없다. | |
지표면온도의 활용 분야는? | , 2004). 지표면온도는 토양수분과 증발산 추정을 비롯하여, 기후 변화, 작물 모니터링, 도시 기후, 수문학, 생태학 등 다양한 분야에서 널리 활용되고 있다(Price, 1980; Kalma et al., 2008; Nemani et al. |
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