GPS 신호의 단일차분을 이용한 편대위성의 상대위치 결정을 위한 필터링 성능 분석

박인관,박상영,최규홍,조성기,박종욱 한국우주과학회 2008 Journal of Astronomy and Space Sciences Vol.25 No.3

CDGPS 신호의 단일 차분을 이용한 편대 위성간의 상대 위치 결정

박인관,박상영,최규홍 한국우주과학회 2006 한국우주과학회보 Vol.15 No.2

18세기 유럽 회화에 나타난 색채 표현의 특성 : 바로크 후기와 로코코를 중심으로 on Focus of Late Baroque and Rococo Paintings

박인관 한국색채교육학회 1997 한국색채조형학회지 Vol.6 No.1

18c European paintings produced painting patterns that value color emotion which deviated from the classical standard. These notable characteristics change can be divided roughly into 3 steps. They are the late Baroque patterns of early 18c, Rococo patterns developed centering around France from middle t sc, and neoclassic patterns of late 18c produced under the influence of the theory of Winckelmann J.J. aesthetician. These three characteristic elements of painting patterns lie on the different expressing techniques and aesthetic value. But there is little concrete analysis or research on how these characteristic differences influenced European paintings and also what kinds of pictorial value they have. Still, color analysis on the paintings of the era is insignificant. And yet analysing the characteristics of t sc paintings, we can see the harmony of light and color. In other words, 18c paintings brought out the harmony of the light on t e paintings, subtle change and shading steps by color. These changes and the constitution of the steps became the representative techniques of the era. This shading technique was the cornerstone of the wider expression of the paintings of the next generation, for which the color research focusing on Baroque and Rococo paintings has its justice in various 18c painting patterns. Hence, this thesis aims at a new appraisal on the pictorial value through the color analysis of 18c European paintings. The reason why I will focus on Baroque and Rococo paintings of various 18c primary patterns is because their colorific meanings by the painting history of this era and pictorial patterns of the next generation are important. I intend to set up some limited situations to clarify the aim of my thesis. One of them is the limitation of application as a research technique. I used two research techniques. That is to say, I will study how the shading technique changes shown overall on 18c paintings and the application method progressed and had characteristic elements, especially what is the relative part of color and its relation to relativity. Next, I will study what the characteristics of color usage of 18c European paintings are and the expression techniques and order by color and arrangement of color. Also I will make a comparative study of the concrete color effect and impression on paintings. I confess my analyses are indirect by printed paintings. And I recognize that my analyses will have limitations by restricted paintings. To compensate for this I referred to 'Farbgestaltung und 'Farntheorie in der Abendlandischen Malerei' by Lorenz Dittmann of Germany as my main text. Color of 18c European paintings surely have some common characteristics having some differences according to the nation and the paintings. The colorific significances in l sc European painting history can be abruptly summarized by three aspects. The first is the basic space extension of color shading techniques by light. The second is the systematizing of theory on primary colors and giving the basis of theory on 4 primary colors. And the last is offering the basis of theory on the harmony of colors of 19c paintings. In other words, shading changes by color from the light and color of Watteau, the close color tone of Chardin, and the bright color sense of Gainsbourgh and Fragonard enlarge the space extension on canvas and increase atmosphere. The paintings of Boucher, Tiepolo, Gainsbourgh are likely to keep the rule of 3 primary colors. And the colors have the splendid and strong effects by white having the overall high chroma and brightness. 3 primary colors decorate the canvas and also green contrasts the existent 3 primary colors. The quiet colors of Chardin, Guardi, Latour, Horgath, and Reynolds brought out gradual color harmony by light and chroma harmony. The green and light harmony of Watteau made it possible for the harmony of 4 primary colors by the use of vital, cheerful, and bright colors. The harmony of high chroma colors and neutral tint by the shading of Goya and Maulbertsch produced a strong contrast with various chroma colors by the subtle change of neutral tone. Their characteristics of color expression on 18c paintings have notable differences from the previous ones. Also they became the basis by which to offer ideological foundation, use and concept of color by scientific study on light succeeded to Romanticism and Impressionism of 19c. So the color phenomenon of 18c might be condensed as the following four characteristics. First, the development of color shading techniques is succeeded to elaborate shading steps of coloring and elaborate shading of coloring and elaborate shading of color, which has the same value as 'color discrimination' shown on 19c paintings. Second, the relation between various chroma colors and neutral tint changed, and the combination between shading techniques and color made the new expression possible. Third, on the existing order of the 3 primary colors the bold use of green emerges as the original color itself and also has a chance to take its place as the fourth primary colors. Fourth, the role of achromatic colors is even more emphasized. Being strong the luster of white, darkness of black, and the brightness of grey, there accomplished a new parallel tone on brightness. The four summaries mentioned above are the common characteristics of color phenomenon shown on 18c European paintings. They can be accepted as a new change on a line realistic expressionism gradually progressed after Renaissance, which made a new aspect on color phenomenon of modern art by the modal changes and influences in the historical process succeeded to 19c arts.

The Design Concept of the First Mobile Satellite Laser Ranging System (ARGO-M) in Korea

조중현,박인관,임형철,서윤경,임홍서,이진영,방승철,나자경,김광동,장정균,장비호,박장현,박종욱 한국우주과학회 2011 Journal of Astronomy and Space Sciences Vol.28 No.1

Korea Astronomy and Space Science Institute (KASI) launched the development project of two satellite laser ranging (SLR) systems in early 2008 after the government fund approval of the SLR systems in 2007. One mobile SLR system and one permanent SLR station will be developed with the completion of the project. The main objectives of these systems will be focused on the Space Geodetic researches. A system requirement review was held in the second half of the same year. Through the following system design review meeting and other design reviews, many unsolved technical and engineering issues would be discussed and resolved. However, the design of the mobile SLR system is a corner stone of whole project. The noticeable characteristics of Korea’s first SLR system are 1) use of light weight main mirror, 2) design of compact optical assembly, 3) use of KHz laser pulse, 4) use of commercial laser generator, 5) remote operation capability,6) automatic tracking, 7) state of art operation system, etc. In this paper, the major user requirement and pre-defined specification are presented and discussed.

The Comparison of the Classical Keplerian Orbit Elements, Non-Singular Orbital Elements (Equinoctial Elements), and the Cartesian State Variables in Lagrange Planetary Equations with J_2 Perturbation: Part I

조중현,박인관,최남미,최만수 한국우주과학회 2011 Journal of Astronomy and Space Sciences Vol.28 No.1

Two semi-analytic solutions for a perturbed two-body problem known as Lagrange planetary equations (LPE) were compared to a numerical integration of the equation of motion with same perturbation force. To avoid the critical conditions inherited from the configuration of LPE, non-singular orbital elements (EOE) had been introduced. In this study, two types of orbital elements, classical Keplerian orbital elements (COE) and EOE were used for the solution of the LPE. The effectiveness of EOE and the discrepancy between EOE and COE were investigated by using several near critical conditions. The near one revolution, one day, and seven days evolutions of each orbital element described in LPE with COE and EOE were analyzed by comparing it with the directly converted orbital elements from the numerically integrated state vector in Cartesian coordinate. As a result, LPE with EOE has an advantage in long term calculation over LPE with COE in case of relatively small eccentricity.

GNSS 신호의 대류층 지연오차 보정을 위한 기상 정보 생성

정성욱,백정호,조중현,이재원,박인관,조성기,박종욱 한국우주과학회 2008 Journal of Astronomy and Space Sciences Vol.25 No.3

A study on the Deriving Requirements of ARGO Operation System

서윤경,류동영,임형철,박인관,임홍서,조정현,박종욱 한국우주과학회 2009 Journal of Astronomy and Space Sciences Vol.26 No.4

Korea Astronomy and Space Science Institute (KASI) has been developing one mobile and one stationary SLR system since 2008 named as ARGO-M and ARGO-F, respectively. KASI finished the step of deriving the system requirements of ARGO. The requirements include definitions and scopes of various software and hardware components which are necessary for developing the ARGO-M operation system. And the requirements define function, performance, and interface requirements. The operation system consisting of ARGO-M site, ARGO-F site, and Remote Operation Center (ROC) inside KASI is designed for remote access and the automatic tracking and control system which are the main operation concept of ARGO system. To accomplish remote operation, we are considering remote access to ARGO-F and ARGO-M from ROC. The mobile-phone service allows us to access the ARGO-F remotely and to control the system in an emergency. To implement fully automatic tracking and control function in ARGO-F, we have investigated and described the requirements about the automatic aircraft detection system and the various meteorological sensors. This paper addresses the requirements of ARGO Operation System. Korea Astronomy and Space Science Institute (KASI) has been developing one mobile and one stationary SLR system since 2008 named as ARGO-M and ARGO-F, respectively. KASI finished the step of deriving the system requirements of ARGO. The requirements include definitions and scopes of various software and hardware components which are necessary for developing the ARGO-M operation system. And the requirements define function, performance, and interface requirements. The operation system consisting of ARGO-M site, ARGO-F site, and Remote Operation Center (ROC) inside KASI is designed for remote access and the automatic tracking and control system which are the main operation concept of ARGO system. To accomplish remote operation, we are considering remote access to ARGO-F and ARGO-M from ROC. The mobile-phone service allows us to access the ARGO-F remotely and to control the system in an emergency. To implement fully automatic tracking and control function in ARGO-F, we have investigated and described the requirements about the automatic aircraft detection system and the various meteorological sensors. This paper addresses the requirements of ARGO Operation System.

이동형 SLR 시스템(ARGO-M)의 운영시스템 요구사항과 사양 도 및 분석

서윤경,박종욱,조중현,임형철,임홍서,박인관 한국천문학회 2009 天文學會報 Vol.34 No.1

이동형 SLR 시스템(ARGO-M)의 운영시스템 요구사항과 사양 도출 및 분석

서윤경,박종욱,조중현,임형철,임홍서,박인관 한국우주과학회 2009 한국우주과학회보 Vol.18 No.1

레이저 추적시스템의 원시자료 후처리 및 정규점 산출 연구

서윤경,류동영,조중현,Kirchner, Georg,임홍서,박인관,임형철,박종욱 한국우주과학회 2009 한국우주과학회보 Vol.18 No.2

한국천문연구원은 우주측지용 레이저 추적 시스템 개발 사업 중 현재 이동형 시스템(ARGO-M) 1기를 개발 중에 있으며, 2009년 5월에 시스템 개념 설계 검토(SDR) 회의를 수행하였고 현재는 예비 설계 단계를 진행 중이다. ARGO-M을 구성하는 5개의 서브시스템 중 하나인 운영시스템은 레이저 관측에 필요한 각종 서브시스템을 제어하고 환경을 종합 판단 후 이를 관측에 반영하며, 실제 관측을 통해 획득한 데이터를 통합 처리 및 전송하는 역할을 담당하고 있다. 현재 본격적인 예비 설계 수행 단계에 있는 운영시스템은 우선적으로 핵심이 되는 소프트웨어의 설계를 위해 오스트리아의 Graz에 위치한 IWF(Institut fur Weltraumforschung) 소속 SLR(Satellite Laser Ranging) 관측소를 2009년도에 방문하여 운영 전반에 관련한 소프트웨어의 로직 분석 작업을 수행하였다. Graz 운영시스템 중 소프트웨어관련 시스템은 크게 KHz급 반복율을 가진 레이저를 사용하여 위성까지의 거리 측정에 해당되는 실시간 시스템과 실시간 측정을 통해 저장된 관측 원시 자료를 이후 분석을 수행하는 비 실시간(Non-real time) 시스템으로 나눌 수 있다. 이 중에서 비 실시간 시스템은 원시 자료 분석을 통해 시간 및 거리 바이어스 적용, 노이즈 제거 등의 후처리 과정과 다양한 통계 분석 그리고 SLR 시스템의 최종 산출물인 정규점(Normal Point) 생성 등을 수행한다. 이번 소프트웨어 분석 연구를 통해 얻어진 주요 알고리즘과 다양한 다이어그램을 포함한 결과물은 ARGO-M 운영시스템에 최적화하도록 소프트웨어 재구성 및 개발에 반영할 예정이다.