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해상작전기반 유·무인 복합체계(MUM-T) 운용방안 및 감항인증 연구
고기성(Gisung Ko),고진환(Jinhwan Koh),김원기(Wonki Kim),장영현(Yeonghyeon Jang),김광수(Gwangshu Kim) 한국해군과학기술학회 2022 Journal of the KNST Vol.5 No.2
Currently, major developed countries are conducting research on manned and unmanned complex systems (MUM-T) according to the characteristics of each military and operating them. In Korea, related research is also being conducted centering on the army, but research by the Navy and Marine Corps is still insufficient. Therefore, in this paper, a plan to operate a manned and unmanned complex system suitable for the conduct of maritime operations and a corresponding airworthiness certification plan were presented.
군용항공기 탑재 소프트웨어의 안전필수기능경로분석(SCFTA) 모델 개발
고기성(Gisung Ko),고진환(Jinhwan Koh) 한국해군과학기술학회 2023 Journal of the KNST Vol.6 No.2
Software related to the safety critical function (SCF) used in military aircraft is designated as a safety support element (SSE), stricter development process should be applied. Therefore, it is very important to clearly identify software safety support elements in the early stages of aircraft development. However, the specific identification criteria are not clear and there are insufficient past cases to refer to, which are frequently subject to controversy at the development site. In this paper, the thread analysis model of the safety critical function of military aircraft software was studied through the analysis of the U.S. Air Forces Airworthiness Circular(AC-17-01). In addition, based on related research, the suitability of the method was verified by applying it to the actual military aircraft system development project, and a route analysis model was presented to ensure the stability and reliability of military aircraft software.
설경은(Kyeong-eun Seol),이흥관(Heung-kwan Lee),고기성(Gi-sung Ko),고진환(Jinhwan Koh) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6
본 논문에서는 UWB(Ultra-Wideband) 레이더를 이용하여 벽 뒤의 인체를 감지하는 연구를 수행 하였다. 신호분석 방식에는 Difference square matrix, Discrete fourier transform(DFT), Matrix-pencil method(MPM), Singular value decomposition(SVD) 등이 있다. 이 방식들의 신호분석 결과를 확인하고 분석시간, 오차, 정확도를 비교하였다.
Super resolution-time delay estimation in multipath environment using matrix pencil method
Vasantha Kumar Chandrasegar(바산타 쿠마르 찬드라세가르),Minju Kim(김민주),Jinhwan Ko(고진환) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
The Matrix Pencil Method (MPM) is used in this research to recover the super-resolution time delay estimate (TDE) of signals in multi-path situations. Estimation errors are compared with existing Multiple Signal Classification (MUSIC) and cross-correlation methodologies to validate the new method. TDE generates measurements by crosscorrelation. Cross-correlation is based on a single model that considers the ideal environment. Simultaneously, when two or more signals are gradually inputted at intervals less than the time gap, the measurement precision begins to decline, necessitating superresolution for reliable time delay measurement. The suggested super-resolution MPM algorithm outperforms existing approaches in precisely recognizing and quantifying all components to their resolution limits and solving closely spaced frequencies.