• Current Industrial and Technological Trends in Aerospace
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• v.5 no.1
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• pp.3-11
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• 2007

1990년대 초부터 2000년대 중반까지 구소련의 붕괴와 예산 투자의 저조로 정체기에 접어들었던 우주개발은 달 및 행성탐사와 같은 새로운 연구개발 움직임과 중국, 인도 등 새로운 우주강자의 부상으로 현재 신성장기를 맞이하고 있는 것으로 보인다. 전 세계 우주프로그램의 정부투자도 2006년 총 50.36 십억 달러로 역사상 최고점을 기록하고 있기도 하다. 주요 우주개발국들은 미국의 우주탐사 계획에 버금가는 탐사계획들을 잇따라 발표했으며, GPS, GLONASS, Galileo 등 위성항법 분야 연구개발에도 높은 우선순위를 부여하고 있다. 정부의 연구개발 투자 확대는 우주산업의 활성화에 직접적으로 영향을 미치는 요인이 된다. 실제로 미국 우주산업 매출의 90%가, 그리고 유럽 우주산업 매출의 60%가 정부고객으로부터 발생하고 있다. 2005년 우주산업 매출은 총 88.8 십억 달러로 전년대비 6% 정도 성장하였으며, 여전히 위성서비스 분야가 전체 매출에서 차지하는 비중이 60%로 가장 높다. 본고에서는 우주분야의 정부 예산 투자 현황과 우주탐사 및 위성항법을 중심으로 한 새로운 연구개발 움직임을 국가별로 살펴보고, 우주산업의 동향과 전망, 그리고 우리나라의 우주산업과 우주개발 관련 주요 정책변화, 현재 진행 중인 국가 우주개발 프로그램에 대해 간략하게 살펴보도록 하겠다.

• Journal of the Korean Geophysical Society
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• v.5 no.2
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• pp.99-109
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• 2002

Among the geophysical exploration methods, electromagnetic method(EM) has the broadest range of instrumental systems and remarkable range of applications. There are a lot of available techniques and instruments which have different depth of investigation and resolution depending on the operating frequency and source-receiver configuration. Furthermore, it is very easy to apply on the engineering and environmental problems since modern EM equipments are remarkably portable, considering their sophistication. Even though electromagnetic theory is very complex and not easy to understand, rapid avances in recent computer technology have made it possible to conduct accurate forward modeling and inversion of various EM exploration data. Here, we are going to provide brief theoretical principles, survey techniques and case histories of some selected EM methods that can be applied to geotechnical and environmental problems in Korea.

• 한국지구물리탐사학회:학술대회논문집
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• 2004.06a
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• pp.88-93
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• 2004

본 논문에서는 현장에서 획득한 2차원 탄성파 탐사 자료를 처리하는 시스템을 제안한다. 일반적으로 탐사 자료는 매우 방대하여 효율적인 자료 처리 및 관리 시스템은 필수적이라고 할 수 있다. 본 논문에서는 모듈의 처리 과정에서 QC(Quality of Control)를 쉽게 하기 위해 윈도우 기반 GUI 환경을 제공할 뿐만 아니라, 모듈의 처리 흐름과 파라미터를 저장할 수 있는 템플릿 개념을 소개한다. 또한 객체 지향 개념을 도입하여 모듈들의 삽입, 삭제가 용이한 장점을 가지고 있다. 개발 환경은 MFC를 바탕으로 Windows 운영체제에서 개발되었다. 본 논문에서 개발된 시스템은 탄성파를 이용한 지반 조사에 효율적으로 사용될 수 있다고 사료된다.

• Journal of Satellite, Information and Communications
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• v.6 no.1
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• pp.1-5
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• 2011

In recent space industry, It has become a major trend to launch lunar exploration satellites to extend activities in the deep space environment. In this paper, a link budget analysis is carried out for the lunar exploration satellite. One of the major difference between the lunar satellite and LEO spacecraft lies in the orbit parameters. The vast distance between spacecraft and the Earth station imposes a challenging task for the spacecraft designers in terms of achieving stable communication link budget. The satellite tool kit software has been adopted to simulate the lunar exploring satellite. The relative distance between the spacecraft and the ground stations are tracked and the communication link budget is calculated accordingly.

• Current Industrial and Technological Trends in Aerospace
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• v.6 no.1
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• pp.74-81
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• 2008

In this paper, the technical trends of the lunar exploration were studied by investigating the objectives of the mission of the recent lunar orbiters. The payloads of the lunar orbiter launched and planned since 1990 are rearranged and analyzed according to the objectives of the mission and the performance. In the future, it will be used to define the objectives of the mission and to make a plan for developing the payloads of the domestic lunar orbiter.

• Geophysics and Geophysical Exploration
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• v.3 no.1
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• pp.25-32
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• 2000

The geophysical data management system was developed to meet both the increasing demands of geophysical data in the practical application of civil engineering, underground water survey, and environmental problems and needs for digital archive and quality control of geophysical data. The system for a data manager is developed under Client/Server (C/S) environment. This manager system is characterized by a relational geophysical database system using MS SQL-server, standardization of geophysical data format, the development of C/S interface program for Windows environment, and the development of transfer program module for the searched data. The system developed for a general user under the internet environment is characterized by Web service (URL:http//geophy.kigam.re.kr) and the development of plug-in module to visualize geophysical image data.

• Economic and Environmental Geology
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• v.47 no.6
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• pp.673-681
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• 2014

Recently, many countries in the world try to develop alternative energy sources, however, traditional hydrocarbon resources are still occupying most of the energy resources. Exploration demands for high technologies are increasing in the development of limited oil & gas resources field owing to the exhaustion of hydrocarbon resources for access area. Therefore, an effort for the development and the application of new technologies such as azimuth seismic survey, ocean-bottom seismic survey and marine controlled-source electromagnetic survey is necessary as well as an understanding of the existing technologies such as 2D/3D seismic survey. This dissertation is designed with the purpose of introducing marine hydrocarbon exploration technologies and analyzing their internalexternal researches, development and science information. In this study, we analised total 616 dissertations for the marine petroleum exploration released in the Sci-expanded DB of 'web of science' during the 2001~2014 periods.

• Current Industrial and Technological Trends in Aerospace
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• v.7 no.1
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• pp.56-67
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• 2009

From 1990s, the lunar exploration programs, suspended over 20 years after the project Apollo's first successful human landing on the Moon in 1969, have been restarted according to a revived interest in Moon. In recent, several nations progress their own lunar exploration program successfully. In this report, to investigate the technical trends of the onboard propulsion system for the lunar orbiter, technical features related to the performance of the propulsion system of the lunar orbiters developed since 1990 are surveyed. In the future, it is expected that this technical report can provide a fundamental guideline for selecting a proper type of the onboard propulsion system for the domestic lunar orbiter.

• Journal of the Korean Society of Propulsion Engineers
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• v.15 no.1
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• pp.90-101
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• 2011

From 1990s, the lunar exploration programs, suspended over 20 years after the project Apollo's first successful human landing on the Moon in 1969, have been restarted according to a revived interest in Moon. In recent, several nations progress their own lunar exploration program successfully. In this report, to investigate the technical trends of the onboard propulsion system for the lunar orbiter, technical features related to the performance of the propulsion system of the lunar orbiters developed since 1990 are surveyed. In the future, it is expected that this technical report can provide a fundamental guideline for selecting a proper type of the onboard propulsion system for the domestic lunar orbiter.

• Information and Communications Magazine
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• v.20 no.2
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• pp.109-117
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• 2003

UWB 기술은 주파수 영역에서 광대역을 갖는 임펄스를 사용하므로 목표물로부터 많은 정보를 얻어, 고해상도 레이더 개발이 가능하다. 이러한 UWB 레이더의 특성을 이용하여 한국전기연구원에서는 지중 금속 물체를 탐지하기 위한 지반 탐사 레이더를 개발하였다. 개발된 레이더는 실제환경에서 금속 물체를 탐지하기 위해서 시험되었다. 개발된 레이더는 물체의 깊이에 대해 고해상도를 가졌고, 동작 파장보다 훨씬 작은 금속 물체까지도 탐지가 가능함을 보였다. 본 논문에서는 개발된 지반 탐사 UWB 레이더 시스템을 소개하고, UWB 레이더의 특성 및 UWB 기술에 대해 기술하고자 한다.