• Title/Summary/Keyword: 잠망경

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해외잠망경

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.31 no.5 s.348
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    • pp.20-21
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    • 1998
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해외 잠망경

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
    • /
    • v.31 no.6 s.349
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    • pp.22-23
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    • 1998
  • PDF

해외잠망경

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.31 no.1 s.344
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    • pp.22-23
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    • 1998
  • PDF

A Study of the Submarine Periscope Detection Algorithm using Characteristic of Target HRRP Information

  • Jin-Hyang Ahn;Chi-Sun Baek
    • Journal of the Korea Society of Computer and Information
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    • v.29 no.1
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    • pp.131-138
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    • 2024
  • The ability of Combat Management System(CMS) to respond quickly and accurately to threat to a naval vessel is directly related to the survivability and combat power of the vessel. However, current method for detecting enemy submarine periscope in CMS rely on manual and subjective method that require operators to manually verify and analyze information received from sensor. This delays the response time to the threat, making the vessel less viable. This paper introduces a periscope detection algorithm that classifies the plot information generated by High Resolution Range Profile(HRRP) into probability-based suspicion classes and dramatically reduces threat response time through classified notifications. Algorithm validation showed 133.3791 × 106 times faster and 12.78%p higher detection rate than operator, confirming the potential for reduces threat response time to increase vessel survivability.

빛나는 경영인 - "기업은 사람에 대한 투자를 아끼지 않아야 합니다" (주)이오시스템 이원승 회장

  • 한국광학기기협회
    • The Optical Journal
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    • s.146
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    • pp.13-16
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    • 2013
  • 이오시스템은 1979년 설립돼 처음 정밀광학 부품업체에서 현재는 야간투시경, 주야간 잠망경, 열영상조준경 등 우리 군이 요구하는 각종 광학 장비를 만드는 방산업체로 성장했다. 첨단기술의 집합체인 우리 군의 '눈'을 만들어 내고 있는 이오시스템의 이원승 회장을 만나 이야기를 들어봤다.

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Study on MMTI Signal Processing Algorithm and Analysis of the Performance for Periscope Detection in Airborne Radar (항공용 레이다를 이용한 잠망경 탐지 MMTI 신호처리 기법 연구 및 성능 분석)

  • Jung, Jae-Hoon;Lee, Jae-Min;Youn, Jae-Hyuk;Shin, Hee-Sub
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.28 no.8
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    • pp.661-669
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    • 2017
  • This paper describes an MMTI(Maritime Moving Target Indicator) for periscope detection in airborne radar. Firstly, we analyze the characteristics of sea clutter, sea targets. Secondly, we study the differences between GMTI(Ground Moving Target Indicator) and MMTI. This paper proposes an optimal MMTI operating environment and method. We also suggest a signal processing algorithm using STAP(Space-Time Adaptive Processing) for detecting small RCS target moving low speed. The detection probability for moving target with MDV(Minimum Detectable Velocity) is simulated under various RCS and multi-channel system. Finally, we analyze the major performance for range, velocity and azimuth accuracy.

On the Vertical Plane Dynamics Modeling and Depth Control of a Submerged Body Moving beneath Free Surface (수면 근처에서 운동하는 잠수체의 수직면 운동 모델링 및 심도 제어)

  • Yeo, Dong-Jin;Rhee, Key-Pyo;Park, Jeong-Yong;Choi, Ju-Hyuck
    • Journal of the Society of Naval Architects of Korea
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    • v.43 no.6 s.150
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    • pp.647-655
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    • 2006
  • In this paper, submerged body dynamics model in vertical plane which can include the effect of free surface and wave is suggested to simulate the motions of submerged body moving beneath free surface precisely. A controller is designed, which can maintain a constant depth below the mean sea level and minimize the pitch angle. Numerical simulations show that the designed controller is effective on depth keeping and minimizing pitch angle in regular waves and irregular waves.

Periscope Imaging System Design and Analysis for Flame Front Visualization (화염 정면 가시화를 위한 페리스코프 영상 시스템 설계 및 해석)

  • Shin, Jaeik
    • Journal of Aerospace System Engineering
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    • v.13 no.5
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    • pp.16-23
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    • 2019
  • This paper describes the design and analysis of a periscope imaging system installed at the engine test facility in the Agency for Defense Development. The periscope system is a cylinder-shaped image observation system installed at the rear of the engine and at the top of the diffuser. The periscope system has high risk of breaking because it is directly affected by high temperature (2300 K) and products of combustion. Thus, we used 1D heat transfer calculation, and 2D and 3D CFD analysis to confirm the heat flux and temperature distribution. Also, the cooling performance was verified. In the current design, using the periscope system, we can see flame shapes, control of the nozzle, and stability of the exhaust flow visually.

Region Segmentation Algorithm of Object Using Self-Extraction of Reference Template (기준 템플릿의 자동 생성 기법을 이용한 물체 영역 분할 알고리즘)

  • Lee, Gyoon-Jung;Lee, Dong-Won;Joo, Jae-Heum;Bae, Jong-Gab;Nam, Ki-Gon
    • Journal of the Institute of Convergence Signal Processing
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    • v.12 no.1
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    • pp.7-12
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    • 2011
  • In this paper, we propose the technique detecting interest object region effectively in the images from periscope of submarine based on self-generated template. First, we extract the sea-sky line, and divide it into sky and sea area from background region based on the sea-sky line. In each divided background region, the blocks which can be represented in each background region are set as a reference template. After dividing an image into several same size of blocks, we apply multi template matching to the divided search blocks and histogram template to divide the image into object region and background region. Proposed algorithm is adapted to various images in which objects exist in the background of sea and sky. We verified that proposed algorithm performed properly without given informmed prby prior learning.ropso, regardless of the slope of sea-sky line and the locmed p of object based on sea-sky line, we verified that the objects region was segmented effectively from the input image.