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NTIS 바로가기대한원격탐사학회지 = Korean journal of remote sensing, v.34 no.6 pt.3, 2018년, pp.1383 - 1398
장재철 (서울대학교 과학교육과) , 박경애 (서울대학교 지구과학교육과) , 양도철 (한국항공우주연구원 영상체계개발팀)
Sea surface wind is one of the most fundamental variables for understanding diverse marine phenomena. Although scatterometers have produced global wind field data since the early 1990's, the data has been used limitedly in oceanic applications due to it slow spatial resolution, especially at coastal...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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산란계 바람장 자료의 단점은 무엇인가요? | , 2006). 하지만, 이러한 산란계 바람장 자료는 낮은 공간 해상도로 인해 연안에서의 정확도 감소 및 결측이 발생하고, 작은 규모의 해양 현상 분석이 불가능하다는 한계점을 보인다 (Tang et al., 2004; Rodriguez et al. | |
KOMPSAT-5 인공위성에 대해 설명하세요. | KOMPSAT-5 인공위성은 2013년 8월 22일에 발사된 우리나라 최초의 X-band(9.66 GHz) SAR 탑재 인공위성으로, 고해상도, 표준, 광역 촬영 모드의 관측 모드(mode) 가 존재한다(Lee, 2010). 고해상도 촬영 모드는 1 m 공간 해상도의 자료로, High Resolution mode(HR), Enhanced High Resolution mode(EH), Ultra High Resolution mode (UH)로 분류되고, 표준 촬영 모드는 3 m 공간 해상도의 자료로, Standard mode(ST), Enhanced Standard mode(ES) 로 분류되며, 광역 촬영 모드는 20 m 공간 해상도의 자료로, Wide Swath mode(WS), Enhanced Wide Swath mode (EW)로 분류된다(SIIS, 2015). | |
전세계의 바람장 관측에 대한 현황은 무엇인가요? | 1990년대 초부터 현재까지 전세계 연구기관에서는 European Remote Sensing-1/2(ERS-1/2), NASA Scatterometer(NSCAT), Quik Scatterometer(Quikscat), Advanced Scatteromter(ASCAT), Rapid Scatteromter (RapidScat)과 같은 산란계(scatterometer)를 운영하면서 약 25 km 공간 해상도의 바람장 자료를 산출하여 전세 계 바람장을 지속적으로 관측하고 있다(Ebuchi, 1999). 산란계 바람장 자료는 풍속은 2 m s–1, 풍향은 20° 안팎의 정확도를 보이며, 수치 예보 모델의 정확도를 높여 주는 입력 자료로 사용되었고, 태풍, 소용돌이(eddies), 대기-해양 상호작용을 포함한 해양 현상 기작을 이해하는데 활용되었다(Liu et al. |
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