• Journal of Digital Contents Society
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• v.19 no.6
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• pp.1197-1205
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• 2018

In this paper, we perform Single Image Super Resolution(SISR) for acquired images of EOTS or IRST from naval combat system. In order to conduct super resolution, we use Generative Adversarial Networks(GANs), which consists of a generative model to create a super-resolution image from the given low-resolution image and a discriminative model to determine whether the generated super-resolution image is qualified as a high-resolution image by adjusting various learning parameters. The learning parameters consist of a crop size of input image, the depth of sub-pixel layer, and the types of training images. Regarding evaluation method, we apply not only general image quality metrics, but feature descriptor methods. As a result, a larger crop size, a deeper sub-pixel layer, and high-resolution training images yield good performance.

• Journal of the Korean Society of Systems Engineering
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• v.19 no.1
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• pp.79-90
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• 2023

In principle, R&D of general weapons systems are led by companies or government-funded organizations. In terms of project execution, the defense R&D planning system was reorganized to conduct SE-based project management by integrating the naval ship project execution procedure into the general weapon system R&D procedure. The development progress was confirmed according to the guide for SE application of DAPA, and a technical review meeting was proposed to enter into the each next phase in the R&D process. This paper focuses on improvement for technical review in terms of technical management based on system engineering for R&D mounted weapon systems and the naval surface ship project in preliminary design and detailed design. So, the improvement direction for reviewing the entry criteria for the R&D weapons systems of the naval ship and mounted weapons is proposed.

• Defense and Technology
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• no.4 s.170
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• pp.56-63
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• 1993

현재 해군에서 추진중인 전투체계사업을 정보통신산업의 육성과 연계시킨다면 우리의 기술수준을 한단계 올려 놓을수 있을 것입니다. 공군의 KFP사업을 우리나라 항공기산업 육성의 발판으로 삼고 추진하는 것과 같이 해군의 전투체계사업을 정보통신산업 육성의 발판으로 삼는다면, 정보통신 기술발전을 계획하고 있는 우리나라의 입장에서 볼때 정보통신산업가 관련된 기술기반을 획득할수 있는 좋은 계기가 될 것입니다

• Journal of the military operations research society of Korea
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• v.32 no.2
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• pp.78-91
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• 2006

Recently mass customization has become a new paradigm in the global market to satisfy both the diversified demands of customers but also the efficiency of the mass production system. In this paper, mass customization is embodied by a new product development method with which various product families are produced from standard "product platform" developed from historical data. The product platform, the key concept of this proposed method, is significantly efficient as a solution to the customer demand of high variety and small quantity products. The proposed method is applied to build the platform family of naval ships, utilizing the concept of "Group Technology". In addition, cost effectiveness of the proposed method is analyzed and the applicable range of requirement conditions are presented. In conclusion, some remarkable effects such as reduction in production cost and development time are expected by employing this method to the procurement process of the naval ships.

• Journal of the Society of Naval Architects of Korea
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• v.46 no.1
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• pp.43-56
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• 2009

The Korean navy has made many efforts to apply the concepts of PLM (Product Lifecycle Management) and M&S to its naval design and production. However, most of the efforts that have being applied to some acquisition processes, focused only on the element technologies without information models and data frameworks. This study discusses an information model of naval ships for advanced naval acquisitions. We introduce a naval ship product model, and it refers to the DPD (Distributed Product Description) concept of SBA (Simulation-Based Acquisition). To realize the product model concept, we design a data architecture and develop a Product Model Management System (PMMS) based on a PDM System. It is validated through the case study of building the product model of the battle ship that the PMMS has the applicability to effectively manage the naval ship acquisition data on the basis of a 3D product model.

• Journal of the Korean Society of Marine Environment & Safety
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• v.20 no.1
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• pp.113-119
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• 2014

Recently, R.O.K. Navy is increasing re-usability of design data and application of M&S(Modeling and Simulation) through the establishment of collaborative product development environment focused on Naval Ship Product Model(NSPM). As a result, the reliability of the result of design is getting better, and furthermore, a study to improve quality of construction through simulation of production/operation is in progress. Accordingly, the database construction of design data and the DB(Database) quality become important, but there was not research related to those or it was just initial state. This paper conducted research about system of the quality verification process of shape elements which compose NSPM based on the quality verification guideline of NSPM as the result of the precedent study. The hull surface was limited as verification object. The study to verify two things that application of basic drawing by the cad model of hull surface, and whether there is error in the geometric quality of cad model was progressed. To achieve this goal, the verification criteria and algorithm were defined and the prototype system which is based on was developed.

• Defense and Technology
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• no.5 s.291
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• pp.22-29
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• 2003

현재 방산업체 위주의 방산물자 수출 수주활동은 한계에 직면하고 있으며 우리가 향후 수출하려는 장갑차, 전차, 초등/고등 훈련기, 신형 자주포, 함정 등과 같은 고가의 시스템 장비는 방산업체의 노력만으로는 수주성공이 어려워 정부의 적극적인 지원이 요구된다고 할 수 있다. 그 동안 우리 정부에서도 방산물자 수출의 중요성과 정부의 역할을 인식하고 상당한 노력을 기울여 왔음에도 불구하고 아직까지도 정부차원의 방산물자 수출전담 지원기구가 없으며, 방산물자 수출을 위한 금융지원제도의 미약, 국제 방산 협력의 미흡, 독자적인 수출전략 품목의 부족, 그리고 해외시장에 대한 정보획득 제한 등의 문제점으로 인해 정부.군.업체가 공동으로 수출 마케팅을 수행하기 어려운 상황이다.

• Defense and Technology
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• no.12 s.178
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• pp.62-63
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• 1993

스웨덴 해군은 지난 8월에 발표된 스텔스 전투함(YSM급, YSB급) 함대에 대한 신작전개념을 연구.개발하기 위하여 Stockholm에 전술 센터를 설치하였다고 밝혔다. 스웨덴 해군은 세계 최초로 향후 12년간 28척의 스텔스 전투함을 건조할 계획인데, 이 신형함에 그 동안 시험선 Smyge에서 시험해 왔던 상대 레이다에 대한 피탐 확률을 낮추는 여러가지 스텔스 기술을 선보일 계획이다. 스텔스 전투함은 기존의 재래식 함정보다 상대 레이다에 대한 피탐 확률이 낮아서 적해안 가까이 전진 배치가 가능하며, 다른 곳에 설치된 센서로부터 표적데이타를 데이터 링크를 통해서 획득할 수 있어서 함의 정숙성이 대단히 높다.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.44 no.3
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• pp.22-28
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• 2007

The STIR(Signal Tracking & Illumination Radar) in KDX(Korean Destroyer Experimental) combat system acquires target from designating 3-D target information of surveillance radar (MW-08), and The performance of radar is decided by target acquisition time and accuracy of tracking loop because the STIR tracks automatically in accordance with tracking algorithm. In the view of ship, elements related with target acquisition time of the STIR can be various. In this paper the target acquisition time of the STIR is reduced by identifying the elements and suggesting the performance improvement method. The way of performance improvement is suggested through analysing main affecting factors. First, tracking algorism is required for analysis. Second, fitness of parameters that control elements related with acquisition distance is analyzed. And the third, accuracy of ship based sensors is analyzed. In conclusion, acquisition time against ship target can be advanced to 3 seconds from 10 seconds.

• Journal of the military operations research society of Korea
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• v.35 no.3
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• pp.31-45
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• 2009

Reliability should be done from the initial stage of development to secure performance and safety of system. To establish and achieve target reliability of a system, reliability should be allocated into the subsystems. In the acquisition and development of a system, frequent failures will cause a negative effect on performing mission and occurs increasing operating cost. This study reviewed and evaluated the existing reliability allocation models using operation and maintenance costs to find the correlation between reliability allocation models and its operating cost. A target system reliability on the diesel engine to be developed for naval vessels is allocated into its subsystem based on the existing reliability allocation models. A selection methodology for reliability allocation models was made to minimize operating cost by using simulation based on the given operating diesel engine data for naval vessels.