• The Journal of the Acoustical Society of Korea
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• 제40권2호
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• pp.109-120
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• 2021

This paper proposes the H∞ norm based data association gate method to apply robustly the data association gate of passive sonar automatic target tracking which is on non-linear targets in dense cluttered environment. For target tracking, data association method selects the measurements within validated gate, which means validated measuring extent, as candidates for the data association. If the extent of the validated gate in the data association is not proper or the data association executes under dense cluttered environment, it is difficult to maintain the robustness of target tracking due to interference of clutter measurements. To resolve this problem, this paper proposes a novel gating method which applies H∞ norm based bisection algorithm combined with 3-σ gate method under Gaussian distribution assumption and tracking error covariance. The proposed method leads to alleviate the interference of clutters and to track the non-linear maneuvering target robustly. Through analytic method and simulation to utilize simulated data of horizontal and vertical bearing measurements, improvement of data association robustness is confirmed contrary to the conventional method.

• Journal of the military operations research society of Korea
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• 제30권1호
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• pp.135-152
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• 2004

Ever since Benoit's(1973, 1978) study, the relationship between defense spending and economic growth has been the subject of extensive empirical works. While a number of studies have reported that higher defense expenditure stimulate economic growth, many other studies have reported that an increase in military burden may hinder economic growth. To the extent that countries differ substantially in socioeconomic structures, the effects of defense spending cannot be generalized across countries. In this paper, Granger causality tests are performed between Korean defense expenditure and economic growth, consumption, investment, inflation and unemployment rate during the period from 1970 to 2002. The results show that Korean defense expenditure did not affect economic growth and unemployment rate. However, Korean defense expenditure caused consumption and inflation to decrease and investment to increase. On the other hand Korean defense expenditure was not Granger-caused by economic growth, consumption, investment, inflation and unemployment rate. In conclusion, the opportunity cost of Korean defense expenditure seemed to be relatively moderate considering Korean security environment. Even if it was not statistically significant, Korean defense burden at least did not bother economic growth.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2003년도 춘계학술발표논문집 (중)
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• pp.1141-1144
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• 2003

Metro Ethernet 서비스는 기존의 라우터나 광전송장비를 거치지 않고 기가비트 이더넷으로 구성된 망을 이용해 스위치만으로 LAN과 같이 연결하는 서비스이다. 이 메트로 이더넷은 기존 SONET과는 달리 패킷교환 방식이므로 링크 대역폭의 효율적인 공유, 저렴한 칩과 장비, 사용자가 원하는 다양한 대역폭 할당, 피리고 인터넷 사용자의 증가와 원하는 대역폭의 증가로 등장하게 되었다. Metro Fiber Ethernet에 적용되는 기술로는 패킷분류화, 포트전송율 제어, QoS, 망복구 능련, 이더넷 VPN, 트래픽 엔지니어링 등이 있다. 본 논문에서는 이러한 기술들을 이용한 Metro Ethernet을 국방망에 적용함으로써 초고속 국방 통신망 구축을 제안하고자 한다.

• Journal of the military operations research society of Korea
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• 제3권2호
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• pp.103-117
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• 1977

국방조직과 규모의 대형화와 군사위협에 따른 전략전술개념의 변동은 방위비의 부담을 가속화시킬 것이다. 군사력 증강소요의 제기와 국민경제에 의한 가용자원의 합목적적인 자원배분과정은 능률적인 정책과제의 선택과 결정을 위한 기본정보자료가 정책법정권자나 입안자들에게 요구된다. 따라서 신무체계의 구매우선순위 결정은 물론 기존 무기체계의 경제적 운용 기간에 대한 운영총괄비용의 추계방법론을 시도하였다. 이는 분석내용이나 결과의 사용에 대한 관점의 상이성을 제시해 주고 있다. 또한 신항공무기체계를 중심으로 운영총괄비용의 추계를 위한 일반적인 개념정립은 물론 비용산정의 구체적인 절차와 기법을 기구하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2013년도 추계학술발표대회
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• pp.1004-1007
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• 2013

제안요청서(RFP)는 발주기관이 프로젝트를 담당할 업체를 최종적으로 선정하기 위해 자사프로젝트에 관한 요구사항을 체계적으로 정리한 문서로 성공적인 프로젝트 수행의 중요한 요소이다. 본 논문에서는 2008년부터 2013년까지 국방 프로젝트 RFP를 대상으로 첫째, 프로젝트 국제 표준규격인 ISO21500 지식 및 관리 프로세스 영역을 적용하여 현황을 분석하였고 둘째, 전체평균 및 사업분류별 지식영역을 비교분석하였고, 셋째, 사업분류별, 발주기관별, 비용별 평균의 추이를 분석하였다. 연구결과로 통합, 품질 영역이 다른 영역에 비해 RFP에 상세히 기술되었으며, 사업분류는 SW개발사업일수록, 발주기관은 사업관리 전문기관일수록, 비용은 높을수록 성공적인 프로젝트 수행을 위한 요소가 RFP에 반영된 것으로 나타났다. 향후 본 연구를 통해 국방 프로젝트의 RFP 작성 시 명확성을 제고하여 성공적인 프로젝트 수행에 도움이 되고자 한다.

• Journal of Technology Innovation
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• 제17권1호
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• pp.149-177
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• 2009

Today, the phase of modem war is very different from past war. That is, the winning of war depends on the ability to obtain information and high technology. The purposes of this research are to propose an effective R&D governance model in national defense sector and to present R&D strategy for obtaining core national defense technology. As a part of collaborative innovation, the strategy to exchange R&D results actively between the defense sector and the private sector will be discussed. The main contribution of this research is dearly defining the concept of R&D governance in national defense sector and applying it to an actual case. The national defense R&D governance model proposed in this paper is based on the characteristics of national defense R&D which are different from other industries. The analysis of business success factors for national defense R&D through the T-50 case study is presented in detail. The T-50 case study reveals the importance of strategic intent, core technology knowledge base, organizational structure, and project management.

• Defense and Technology
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• 2호통권156호
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• pp.20-29
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• 1992

무궁무진한 대기속의 산소를 산화제로 사용함으로써 일반 로케트보다 월등히 높은 비추력을 얻을 수 있는 램제트는 유럽과 소련에서는 이미 실용화 되어 있으며, 미국에서도 활발한 연구가 진행되고 있다. 이러한 선진국들의 활발한 연구와 이의 실용화에 비해 국내에서는 이에 대한 연구가 거의 없는 상태이므로 앞으로 학계에서의 활발한 연구가 기대된다

• Journal of the military operations research society of Korea
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• 제33권2호
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• pp.87-100
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• 2007

The aspect of future warfare is NCW(Network Centric Warfare) in accordance with the IT development, so MND have the planning of M-BcN(Military Broadband convergence Network) establishment as the basic system of NCW by the end of 2008. IPv6 address must be managed systematically as a essential element of NCW. In the previous study, it is designed on the basis of the present military information communication network topology. However, it makes some problems. First, it is difficult for present topology to adapt the future M-BcN which is different from the present military network topology. Second, it has defects of inefficiency of route aggregation and enlargement of routing table size. In this paper, we improved the route aggregation and routing table size by assigning the hierarchical address on the basis of M-BcN topology and adjusting the position of field identifying service network. Furthermore, it is proved by the network simulation program(OPNET 12.0).

• Journal of the Korea Institute of Information and Communication Engineering
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• 제18권7호
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• pp.1764-1776
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• 2014

This study is the context about an introduction of a bookkeeping by double entry & accrual base accounting which is the turning point of National Accounting and defense integrated financial management which is delivered following system Digital Budget Accounting system, in other words about something to do with the improvement of efficiency of financial information data. National defense Integration Financial Information system (NDIFIS) facilitates Project program management and makes the whole process of Defense financial Business manageable in one system. Also, there is a purpose to increase the credibility and transparency of National defense finances by providing internal and external information users with credible financial statements and cost materials. By using data envelopment analysis (DEA) which is a useful method to measuring the efficiency of organization, this study aims to improve the financial information data efficiency by comparing the efficiency of the same type troops and when it comes to the inefficient troops, by offering the certain objective of efficiency.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제22권1호
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• pp.87-93
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• 2021

As the portion of modern weapons systems equipped with electronic components increases, the presence of embedded software has also increased, subsequently drawing interest in quality management and development methods. Unlike mechanical systems, software is logically intangible, hard to troubleshoot, and hard to reuse, making it hard to utilize limited resources when exposed to failures. The United States had successful results in establishing the Capability Maturity Model (CMM) by studying and applying separate processes for development and quality management of defense software. South Korea has also established, and utilizes, a standard of development and quality management for defense software based on international standards. However, some say those standards still remain at a basic level, and should be modified along with the progress in software. If the standard stays at a basic level, compared to software progression, the cost to reuse and restore resources will increase exponentially. This paper discusses improvement in the test processes for defense software through the Test Maturity Model-integration (TMMi)-derived from the CMM-and presents a blueprint for defense software quality management.