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다중 레이다 시스템의 고속표적 인계 시점 결정기법 연구
박순서(Soon-Seo Park),장대성(Dae-Sung Jang),최한림(Han-Lim Choi),김은희(Eun-Hee Kim),선웅(Woong Sun),이종현(Jong-Hyun Lee),유동길(Dong-Gil Yoo) 한국전자파학회 2016 한국전자파학회논문지 Vol.27 No.3
다층 방어 시스템은 표적의 장거리 조기탐지를 위해 조기 경보 레이다를 활용하고, 정밀 요격 통제를 위해 대공 레이다를 활용하는 방식을 취한다. 그러므로 레이다들 사이에 표적 인계 과정을 필요로 하게 되는데, 추적의 안정화 및 교전통제를 고려하여 적절한 시점에 표적 인계가 이루어져야 한다. 본 논문에서는 다층 레이다 시스템의 운용 특성을 분석하고, 고속표적에 효과적으로 대응하기 위한 추적 성능 예측 기반의 표적 인계 시점 결정기법을 제안하였다. 또한, 탄도탄 방어 시나리오를 포함하는 통합 시뮬레이터 환경에서 제안 기법을 검증하였다. A multiple radar system is comprised of early warning radar for fast detection of a target and air defense radar for precision intercept. For this reason, target take-over process is required between the two radars. The target take-over should be performed at an appropriate time by consideration of stable tracking and effective fire control. In this paper, operation characteristics of multiple radar system are analyzed and target take-over time determination method using estimation of target tracking performance is proposed for high-velocity targets. The proposed method is validated with ballistic target defense scenarios in the developed integrated simulator.
박순서(Soon Seo Park),서철원(Cheol won Suh),박종범(Jong Beom Park),박지운(Ji Woon Park),임소덕(Soo Duk Lim),허주령(Joo ryung Huh),남순열(Soon Yuhl Nam),김상윤(Sang Yoon Kim),이호규,장혜숙(Hye sook Chang),김태원(Tae Won Kim),이제환(Je Hw 대한두경부종양학회 1999 대한두경부 종양학회지 Vol.15 No.2
Objectives: To study the clinical features of the primary nasal/nasopharyngeal non-Hodgkin's lymphomas and to evaluate the implication of immunophenotyping as a prognostic factor. Patients and Methods: From January 1990 to December 1997,41 patients(median age, 41 years) of primary nasal/nasopharyngeal non-Hodgkin's lymphoma were studied. The clinical records and paraffin-embedded tissue blocks were reviewed retrospectively. The histologic features, immunophenotypic findings(pan-T, pan-B, CD3, CD56) and Epstein-Barr virus in situ hybridizatios were examined. The prognostic factors for clinical outcome were evaluated in these patients. According to Ann-Arbor system, there were 30 patiets(73%) with stage IE, 4(10%) with stage IIE, 3(7%) with stage IIIE, 4(10%) with stage IVE lymphoma. Among the patients with stage IE/IIE, 4 patients received local radiation alone, 4 received chemotherapy alone, 25 received combination chemotherapy and radiotherapy and 1 refused treatment. The patients with stage IIIE/IVE were given combination chemotherapy and radiotherapy. Results: Immunophenotyping were performed in 40 patients and staining results were as follows: 3(7%) patients with B cell, 17(42%) with T cell, 18(44%) with NK/T cell(CD56 positive), and two patients with unclassifiable result. Epstein-Barr(EB) virus in situ hybridization were performed in 28 patients and 23(82%) patients had positive EBV-encoded RNAs(EBERs). 21(55%) patients achieved a complete remission. There was no difference in complete remission between radiation alone and combination therapy. With median follow-up of 30 months, 5-years disease free survival of complete responders was 60% and 5-years overall survival rate was 36%. Multivariate analysis showed that better overall survival was related with absence of B symptoms, ECOG performance ≤1 and non-NK cells. Conclusion: Most of all cases were positive for EBER. Since NK/T phenotype carried the worst prognosis, analysis for CD56 expression should be done. Further prospective studies were warranted to evaluate the role of chemotherapy in stage IE/IIE.
자세 기동을 고려한 항공기 탑재 다기능 레이다 통합 시뮬레이터 구현
고재열(Jae-Youl Ko),박순서(Soon-Seo Park),최한림(Han-Lim Choi),안재명(Jae-Myung Ahn),이성원(Sung-Won Lee),이동희(Dong-Hui Lee),윤정숙(Jung-Suk Yoon) 한국전자파학회 2017 한국전자파학회논문지 Vol.28 No.3
본 논문은 항공기용 다기능 레이다의 성능 평가를 위한 레이다/환경 통합 시뮬레이터 구축 및 검증에 대해 설명한다. 항공기 운용 시나리오 구현을 위해 6자유도 동역학 모델을 적용하였다. 항공기 6자유도 강체 동역학 모델에서 항공기의 자세 기동을 고려한 궤적 생성을 위해 정상 상태 비행 평형점 탐색, 오토파일럿 설계, 항공기 유도 명령 생성을 진행하였다. 레이다 시뮬레이터 구축을 위해 레이다의 표적 탐지 및 측정 모델, 추적 필터를 포함하는 레이다 운용 모델이 고려되었다. 이를 통해 항공기의 자세 기동을 고려한 다기능 레이다/환경 통합 시뮬레이터를 구현하였고, 특정 공대공 시나리오를 생성하여 레이다/환경 통합 시뮬레이터를 시험 및 검증하였다. In this paper, a simulation test bed is presented which operates to provide full-scale simulation of airborne multi-function phased array radars. This simulation test bed provides a capability to evaluate the target tracking performance. To realize aircraft operation scenario, we developed 6DOF aircraft dynamics model which can generate trajectories and attitude of an aircraft. This procedure includes steady state flight trim search, autopilot design, and aircraft guidance command design. Also, the radar-environment integrated simulator includes target detection/measurement model and tracking filter. Developed simulator is validated by creating an air-to-air scenario.
분산형 다중 레이다 융합시스템을 위한 추적 관리 구조 선정
이우철(Woo-Cheol Lee),박순서(Soon-Seo Park),최한림(Han-Lim Choi) 제어로봇시스템학회 2017 제어·로봇·시스템학회 논문지 Vol.23 No.2
To obtain accurate target information, fusion technique can be used in a multiple radar air defense system. This article proposes a stable track management architecture for hierarchical distributed multiple radar fusion system which consists of multiple subordinate radars and superposed fusion center. It is difficult to apply Track-to-Track association and Track-to-Track fusion technique, which are a basic component of distributed fusion architecture, directly to a radar system which requires high reliability. This paper selected fusion architecture and Track-to-Track fusion method which can improve track fusion performance, and suggested stable track management architecture which contains track merge component.