통합 검색 | Korea Science

Kim, Bang-Yeop;Gicquel, Anne-Helene;Brichler, Geoffroy
- 대한원격탐사학회:학술대회논문집
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- 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
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- pp.336-339
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- 2006
In this paper, the preliminary transfer orbit analysis results for the COMS mission were presented. As the first step of transfer orbit analysis, the preliminary analyses of LAE burn strategy, geometrical visibility, and launch window were performed. For the analysis process, all launcher nominates were divided into three groups according to the declination of LAE thrust angle. So, the three launch cases were assigned as the representative launcher of each group, respectively. They are Ariane-5, Atlas summer and winter launch cases. And all analyses were performed at the representative launcher of each group. One nominal and three back-up plans were considered for the establishment of LAE burn strategy. And for geometrical visibility analysis, four TT&C ground stations were considered. Finally, the preliminary launch window analysis was performed about the duration of one year from the first day of September 2008. The analysis results show that the all launch cases comply with the transfer orbit operation requirements.
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Matsui, Toshihito;Park, Young-Min;Takagi, Koichi
- 한국음향학회:학술대회논문집
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- 한국음향학회 1994년도 FIFTH WESTERN PACIFIC REGIONAL ACOUSTICS CONFERENCE SEOUL KOREA
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- pp.668-673
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- 1994
The paper presents a simple method for calculating the sound exposure level (LAE) of helicopter noise. It is assumed that a helicopter is a nondirective point source and that A-weighted sound pressure level at an observation point can be expressed by an A-weighted power level and a simple function of the distance from the helicopter. We derived a formula for LAE by integrating the sound energy along a finite or an infinite flight segment. The values calculated form the formula agree well with the results of test flights in which three types of helicopters each were operated in three moving modes of approach, takeoff and level flyover.
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류관희
- 방송공학회논문지
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- 제21권2호
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- pp.192-199
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- 2016
혼합증강현실 기술은 순수 현실세계와 순수 가상세계를 제외한 증강현실과 증강 가상을 포함하여 현실세계와 가상세계를 혼합하는 내용을 다룬다. 혼합증강현실에서 현실세계에서 움직이는 라이브행동자와 실체(LAE: live actor and entity)가 3D 가상공간과 혼합하여 자연스럽게 표현될 수 있으면, 원격 3D 몰입 회의, 3D 가상 체험 교육 서비스 등이 가능하다. 따라서 본 논문에서는 LAE를 3D 가상공간에 자연스럽게 혼합하고, 서로서로 상호작용할 수 모델을 표준 제안한다. 제안한 모델을 기반으로 LAE의 혼합과 상호작용이 수행될 수 있다.
https://doi.org/10.5909/JBE.2016.21.2.192 인용 PDF KSCI KPUBS HTML