http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
예성혁,류충호,황규환,서일환,김형섭,Ye, Sung-Hyuck,Ryu, Chung-Ho,Hwang, Gyu-Hwan,Seo, Il-Hwan,Kim, Hyung-Sup 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.3
Defense Systems Test Center in ADD supports increasingly various missile test requirements such as higher altitude event, multi target operation and low-altitude, high velocity target tracking. In this paper, we have proposed the development of instrumentation radar tracking status simulator based on virtual reality. This simulator can predict the tracking status and risk of failure using several modeling algorithms. It consists of target model, radar model, environment model and several algorithms includes the multipath interference effects. Simulation results show that the predict tracking status and signal are similar to the test results of the live flight test. This simulator predicts and analyze all of the status and critical parameters such as the optimal site location, servo response, optimal flight trajectory, LOS(Line of Sight). This simulator provides the mission plan with a powerful M&S tool to rehearse and analyze instrumentation tracking radar measurement plan for live flight test at DSTC(Defense Systems Test Center).
Phase Behavior of PS-(PS-b-P2VP)₃ Miktoarm Star Copolymer
우도경,서예성,김진곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
We synthesized polystyrene-[polystyrene-b-poly(2-vinylpyridine)]₃ miktoarm star copolymer [PSL-(PSS-b-P2VP)₃] where PSL and PSS are long and short PS chains, respectively, by the combination of anionic polymerization, ATRP, and click reaction. We changed the volume fraction of PS block (ƒPS) and the chain asymmetry of PS chain (τ=ƒPS,L/(ƒPS,L+ƒPS,S). Phase behavior of SL-(PSS-b-P2VP)₃ was investigated by TEM and SAXS. Inverted gyroids consisting of PS chains were formed at ƒPS=0.64 and τ=0.65, while, asymmetric lamellae were observed at ƒPS=0.81 and τ=0.79. Interestingly, the phase behavior was greatly affected by τ at a fixed ƒPS. For instance, at a fixed ƒPS (0.64), inverted gyroid was formed at τ=0.65, while asymmetric lamellae was observed at τ=0.46. With decreasing τ (or the difference of molecular weight between PSL and PSS becomes smaller), interfacial curvature is not expected, because all PSS-b-P2VP chains have no need to arrange into the same direction.
황규환,서일환,예성혁,Hwang, Gyu-Hwan,Seo, Il-Hwan,Ye, Sung-Hyuck 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.2
As weapon systems are becoming advanced and intelligent, they are designed to have such events like ejecting sub-munitions. So it is continually requested to measure the event time and position exactly. We can measure the event time and position by analyzing the complex signal of the instrumentation radar in the time domain and can also obtain the spin rate of the target by analyzing the complex signal in the frequency domain.