• 한국측량학회:학술대회논문집
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• 한국측량학회 2010년 춘계학술발표회 논문집
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• pp.187-190
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• 2010

GPS survey came into wide use, but there are inefficient parts in related laws and regulations. Especially, to get GPS surveying results under 1.5cm permissible error the observation time must be longer than 8 hours in triangulation points surveying regulations. However, GPS surveying technology is developing now, so results could be acceptable under 4 hours observation time. Therefore, this study made a stable standard of observation time in GPS survey by comparing the errors due to observation time, and used PAJU, DOND and YANP's GPS data and 6 cadastral points' survey data. Also, to analyze the variations of results due to baseline distance, applied each GPS site as a fixed point and compared the positions. As a result, the stable satisfactory results were calculated under 4 hour survey, when the baseline distances were under 30km.

• 천문학회지
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• 제38권2호
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• pp.203-206
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• 2005

The large field multi-color CCD sky survey program based on the 60/90 Schmidt telescope of NAOC has been processed in cooperation among many observatories and universities of Asian countries. The observation and scientific results are reviewed.

• 천문학회보
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• 제45권1호
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• pp.46.1-46.1
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• 2020

DEEP-South (DEep Ecliptic Patrol of the Southern Sky) team will start the 2nd phase of KMTNet observation in Oct 2020. The DEEP-South observation mainly consists of three survey modes: (1) Activity survey (AS) that aims at finding active phenomena of small Solar System bodies. (2) Light curve survey (LS) targets to discover and characterize light variations of asteroids. And (3) Deep drilling survey (DS) focuses on the objects beyond the orbit of Jupiter (Centaurus and trans-Neptunian objects) as well as near Earth asteroids. For asteroid family (AF) studies and target of opportunity (TO) observations for urgent photometric follow-up, targeted mode will also be used. DEEP-South team is awarded 7.0% of the telescope time at each site every year from Oct 2020 to Sep 2023 in the 2nd phase of KMTNet operation which corresponds to about 75 full nights a year for the network. In this presentation, we will introduce our survey strategy and observation plan.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2012년도 춘계학술대회
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• pp.172-174
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• 2012

The maritime traffic system research has been studied for the safety and efficiency of the Marine Navigation. In order to evaluate the maritime traffic system, the vessel traffic observation is playing important roll. Recently, the way of collecting the vessel traffic information has been become fixed by using the radar, the AIS and the visual observations. However, it is still difficult to get the information about ships without the AIS. In this paper, the past vessel traffic observation results are shown. From those data and introducing the way of Japanese traffic survey, the recent matters of the vessel traffic observation are discussed.

• 천문학회보
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• 제36권2호
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• pp.118-118
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• 2011

We executed a simultaneous survey of 22 GHz water maser and 44 GHz methanol maser toward 290 shocked $H_2$ emitting regions, which were identified from the galactic plane survey at $H_2$ 2.122 micrometer (UKIRT Widefield Infrared Survey for $H_2$; UWISH2). The primary goal of this observation is to characterize the H2 emission sources whether they are sincerely due to the outflows of young stellar objects or other shocked emission from older/evolved objects. We discovered 15 water maser sources and 15 methanol maser sources which provide the detection rate of around 5 percents. Most of detected sources have IRAS sources, infrared dark clouds, and/or submilimeter sources in the beam size of KVN single dish. In this poster, we will present the detailed results of our survey observation and discuss about the star formation rate in the galactic plane.

• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2007년도 춘계 지질과학기술 공동학술대회
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• pp.546-548
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• 2007

• 한국수자원학회논문집
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• 제55권10호
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• pp.835-841
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• 2022

댐 저수지 수위는 댐 운영에 있어서 핵심적인 수문자료라고 할 수 있다. 댐 저수위를 이용하여 저수량을 산정하기도 하고 가뭄 및 홍수 등 재해에 대비하기도 한다. 그러나 저수위는 댐 부근에서만 계측되어 넓은 면적을 가지는 저수지를 대표하기 어렵고 댐 부근은 방류 등의 영향으로 수면이 왜곡될 가능성이 높다. 또한 조사 결과 저수지 수면은 일정하지 않고 불규칙하며 구간별로 하강과 상승을 반복하는 것으로 나타났다. 이렇게 복잡하고 불규칙한 지수지의 대표 저수위 산정을 위해서 저수지 수위 관측밀도를 높여야 하며 본 연구에서는 화천댐에 대하여 최적의 수위 관측밀도를 도출하고자 하였다. 종방향으로 조사된 저수지 수면 표고를 통계분석하여 저수위 계측 적정 개소수를 도출하였다. 저수지 규모 별로 관측 밀도가 다르게 나타날 수 있어 괴산댐과 보성강댐에 대해서 같은 분석을 실시하였다. 그 결과 화천댐은 4개소, 괴산댐은 3개소, 보성강댐은 7개소의 관측밀도가 필요한 것으로 분석되었다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
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• pp.80-83
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• 2007

21세기에 들어오면서 자연재해의 원인이 폭염, 지진, 해일, 태풍 등으로 다양화되고 있을 뿐만 아니라, 자연재해의 발생 빈도와 규모가 증가되면서 그로 인한 인명과 재산 피해의 규모도 대형화되고 있는 실정이다. 이에 세계 50여개 국가는 지구시스템 변화의 이해, 감시, 예측에 필요한 지구관측을 담당할 지구관측그룹(GEO) 설립에 동의하여 활동하고 있다. 우리나라도 GEOSS 과학기술 국제협력을 국가 차원에서 효과적으로 대응하고, 한국 GEOSS 구축 사업을 성공적으로 수행하기 위하여 KGEO 사무국이 개설되어 활동하고 있다. 좀 더 발전적인 GEOSS 구축을 위하여 KGEO 사무국과 한국과학기술정보연구원(KISTI)이 협력하여 GEOSS 9개 편익분야에 관한 국내 현황조사를 실시하였다. 본 조사는 표준화, 정보시스템 운영 및 관리, 원시자료 및 메타데이터 보유현황, 인프라스트럭처, 기타 일반사항 등 5개 부분으로 나누어 진행하였으며, 조사 결과는 향후 국가 전지구관측시스템 구축방안 수립을 위한 기초 자료로 활용하게 될 것이다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.955-958
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• 2003

Nepal is a country of mountains The higher order geodetic points were mostly established on the top of mountains and these points were used for the geodetic network extension. Lower order geodetic control networks were established at different times and used for the surveying and mapping activities of the country.. It has been found that the rate of convergence between north and south borders of Nepal to be 21${\pm}$2 mm each year and the rate translation of Kathmandu to 55${\pm}$3 mm/year to the plates. The most intense deformation in Nepal occurs along the belt of high mountains along its northern border res ulting in a strain contraction rate normal to the Himalayan Arc. This belt is approximately 40 km wide and extends into southern Tibet.( 13). Recently Survey Department of Nepal has lunched a program of strengthening the existing geodetic network of Nepal and re-observed the position of higher order geodetic points by using geodetic GPS receivers to evaluate their position and thus to define the precision of the control points once again. This paper describes the observation procedure and the adjustment results of the existing higher order control network of Nepal established in different time using different types of equipment and techniques; and highlights the observation procedure and the result obtained after the post processing of the GPS observation results. Attempt has been made to give the procedure and identify the methodology for the re observation of existing higher order geodetic points by using GPS receiver and post processing the observed data so that the existing higher order geodetic points are within the given accuracy standard.

• 대한지구과학교육학회지
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• 제5권2호
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• pp.166-174
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• 2012

This study is purposed to survey on astronomical observation experiences of elementary students and teachers. Survey samples are 182 elementary students and 51 elementary teachers, and 8 students and 2 teachers among them are interviewed. The results of this study show that most elementary students are not interested in observing constellations, planets, and moon. Also most elementary students and teachers are not taught to observe astronomical objects. Finally, regarding the difficulty of astronomical practice, teachers pointed out that lack of knowledge about astronomy.