• Aerospace Engineering and Technology
• /
• v.10 no.2
• /
• pp.154-162
• /
• 2011

The KOrea Multi-Purpose Satellite-3 (KOMPSAT-3) provides 0.7 m Ground Sample Distance (GSD) panchromatic image and 2.8 m GSD multi-spectral image data for various applications. The KOMPSAT-3 system data will be applied in the field of earth observations, covering land, sea, coastal zones, and Geographic Information Systems (GIS). In order to keep the swath width of 15km at nadir view of KOMPSAT-3, CCD consist of approximately 24,020 pixels excluding 20 dark pixels at both sides and has overlap region. Because there are no CCD-line sensors with a pixel size of $7{\mu}m$, the field of view is separated into 2 parts and imaged on 2 detectors, each with 12,080 pixels. Therefore, 2 detectors have different geometric characteristic. This paper provides image simulation for geometric characteristics analysis of overlapping area of KOMPSAT-3 using KOMPSAT-2 image data.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2017.11a
• /
• pp.109-111
• /
• 2017

수로조사 정보DB의 효율적인 운영 관리시스템 개발을 통하여 해양정책 수립과 신속하고 다양한 해양공간정보 제공에 부응코자 해양공간정보 수요자 중심이 관리 및 데이터 활용 지원체계를 구축하여 글로벌 해양강국으로 해양영토관리, 재난 및 재해, 선진형 국민체감 해양정보 제공 등 다양한 목적으로 활용.

• Journal of the KSME
• /
• v.49 no.11
• /
• pp.45-51
• /
• 2009

한국원자력연구원의 다목적 연구용 원자로, 하나로는 중성자 이용 물성 연구 등 다양한 분야에 사용되며, 중성자는 녹색기술 관련 소재의 생산과 특성 분석에 매우 유용한 도구이다. 중성자 도핑을 이용하여 생산되는 반도체는 그린 카에 사용되는 전력 소자에 활용되고 있다. 중성자 산란 실험 장치들은 이차전지 재료와 수소저장 물질의 물성 연구에 활용되고 있다. 중성자 비파괴 검사 장치는 연료전지의 성능 연구에 활용되고 있다. 고속중성자를 이용하여 스위칭 소자의 특성을 개선하는 기술과 장치가 구축되면 전력 소자의 효율 증대에 기여할 것이다.

• Journal of the Korean Institute of Rural Architecture
• /
• v.8 no.1
• /
• pp.1-8
• /
• 2006

This thesis has the aim of studying that the problems of space;time, effectiveness of space, economic characters in the architectural space that should be solved in accordance with the multi-purpose furniture in the multi-purpose rooms on the architectural planning method. The scope of this study is on the space of houses, schools and churches. The possibilities of using the methods between the multi-purpose rooms and multi-purpose furniture were tested. And the real furniture designed by the author was introduced among the pages. References, observations and the feedback from the users were used as the method of this study. The following are the contents of this study; 1. Background and the characters of the space in the multi-purpose rooms. 2. Present and potential features of the multi-purpose rooms. 3. Design method of the multi-purpose rooms. 4. Real multi-purpose furnitures designed and the evaluation on those goods. As a result of this study the multi-purpose furniture could be recommended as a good method to improve the spacial enhancement for the multi-purpose rooms. From now on, the researches like this could be studied as good problem seeking methods.

• Aerospace Engineering and Technology
• /
• v.12 no.1
• /
• pp.144-151
• /
• 2013

The KOrea Multi-Purpose SATellite-2 (KOMPSAT-2) is to provide 1.0 m Ground Sample Distance (GSD) panchromatic image and 4.0 m GSD multi-spectral image data for various applications. The KOMPSAT-2 system performs mission applications in the field of earth observations, covering land, sea, coastal zones, and Geographic Information Systems (GIS). The purpose of this document is to compute ground coordinate using satellite position, velocity and attitude data in KOMPSAT-2 and document for work-flow of location accuracy correction in KOMPSAT-2.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2015.10a
• /
• pp.936-939
• /
• 2015

현재 우리나라의 대표적인 저궤도실용위성 시리즈인 '다목적실용위성'은 K2, K3, K5, K3A(2호, 3호, 5호, 3A호) 이렇게 총 네 가지로 구성되어 있다. 본 논문에서는 한국항공우주연구원에서 운영하는 다목적실용위성 K3인 일상 임무계획(Mission Planning)의 모듈 자동화 시스템 개발에 대한 내용을 다뤘다. 그중에서도, 일상적으로 반복 수행되는 K3 임무계획 업무 중에서 수동 작업을 자동화하기 위해 객체지향 CBD 개발 방법론을 토대로 C#을 이용한 자동화 시스템을 구조화 시키는 방안에 대해 주력하였다. 그 결과로 자동화 개념 정립을 위한 Feasibility Study를 수행할 것이다. 이를 다목적실용위성 K3 임무계획 중 일상적인 임무계획에 한하여 제한적으로 적용할 수 있을 것으로 기대하며, 이는 나아가 본 선행연구 결과물을 이용하여 K3 임무계획 자동화시스템에 적용에 적극 활용될 수 있을 것이다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2023.05a
• /
• pp.361-361
• /
• 2023

본 연구에서는 기후변화가 다목적 댐의 수자원 관리에 미치는 영향을 분석하기 위해, 기후변화 시나리오를 기반으로 강우-유출과 저수지 운영 모형을 연계 모의하고, 갈수 시 물 공급과 홍수라는 두가지 상반된 위험 요소를 동시에 분석하는 방법론을 제안하고, 국내 댐 유역에 대해 적용성을 평가한다. 기후변화 시나리오로는 공통사회경제경로(Shared Socio-economic Pathway; SSP) 중 SSP2-4.5와 SSP5-8.5를 선택하고, 편이보정 후 2015-2100년의 미래 기후 자료를 구축한다. 수문과정의 불확실성을 고려하기 위해, GR4J, IHACRES, TAU 등 세가지 집중형 수문 모형으로 댐 유입량을 모의하고, 저수지의 물 공급 및 홍수 조절을 고려한 저수지 운영 모의를 수행하고, 기간별 이수안전도와 홍수위험도를 산정한다. 적용 유역으로는 다목적 댐인 합천댐과 섬진강댐의 상류유역을 선택하여, 제안된 방법론의 적정성을 평가한다. 초기 분석 결과, 먼 미래(2081-2100년) 기간에 대해 이수안전도 보다 홍수위험도의 변화가 컸으며, 근 미래의 변화는 먼 미래 보다 상대적으로 적고 뚜렷한 경향을 찾기 어려웠다. 본 연구에서는 다중 수문모형을 활용한 댐 유입량 모의불확실성 개선 방안과 미래 기후에 대한 이수안전도 및 홍수위험도 분석 결과의 함의에 대해 중점적으로 토의한다.

• Journal of Aerospace System Engineering
• /
• v.13 no.6
• /
• pp.52-59
• /
• 2019

The rotor blade is a key component that generates the lift, thrust, and control forces required for helicopter flight by the torque transmitted through the hub and the blade pitch angle control, and should be designed to factor vibration characteristics so that there is no risk of resonance with structural safety. In this study, the structural design of the main rotor blade for MPUH(Multi-Purpose Unmanned Helicopter) was conducted and the sectional stiffness measurement of the fabricated blade was performed. The evaluation of the vibration characteristics of the main rotor system was then conducted factoring the measured stiffness distribution. The interior of the rotor blade comprised of the skin, spar, and torsion box, and carbon and glass fiber composites were applied. The Ksec2D program was applied to predict the stiffness of blade, and the results were compared to the measured data. CAMRADII, a comprehensive rotorcraft analysis program, was applied to investigate the natural frequency trends and resonance risks due to the rotor rotation.

• Journal of the Korean Geographical Society
• /
• v.47 no.2
• /
• pp.282-296
• /
• 2012

This study compared effects of spatial resolution ratio in image fusion by Korea Multi-Purpose SATellite 2 (KOMPSAT II), also known as Arirang-2. Image fusion techniques, also called pansharpening, are required to obtain color imagery with high spatial resolution imagery using panchromatic and multi-spectral images. The higher quality satellite images generated by an image fusion technique enable interpreters to produce better application results. Thus, image fusions categorized in 3 domains were applied to find out significantly improved fused images using KOMPSAT 2. In addition, all fused images were evaluated to satisfy both spectral and spatial quality to investigate an optimum fused image. Additionally, this research compared Pixel-Based Image Analysis (PBIA) with the GEOgraphic Object-Based Image Analysis (GEOBIA) to make better classification results. Specifically, a roof top of building was extracted by both image analysis approaches and was finally evaluated to obtain the best accurate result. This research, therefore, provides the effective use for very high resolution satellite imagery with image interpreter to be used for many applications such as coastal area, urban and regional planning.

• Aerospace Engineering and Technology
• /
• v.3 no.2
• /
• pp.141-148
• /
• 2004

The importance of satellite data for numerous applications is stressed by the fact that many countries have given the development of space technologies very high priority. Among these, Korea has established a medium-term space development strategy to promote space development both on a scientific as well as commercial level. As part of this strategy, the first operational earth-observation, multi-purpose satellite(KOMPSAT-1) was launched successfully in December, 1999. The Electro-Optical Camera (EOC) on board of KOMPSAT-1 supplies panchromatic images with a spatial resolution of 6.6m Until April, 2004, it collected over 150.000 images of the Korean Peninsula and the rest of the world. This paper examines the use of remote sensing data to analyze urban growth in the city of Daejeon from 1960 to 2003. By using visual interpretation, land use maps are created.