• Title/Summary/Keyword: 과학기술위성

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벤처기업을 찾아서 - (주)로커스

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.33 no.5 s.372
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    • pp.22-23
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    • 2000
  • 90년대 중반 국내 최초로 컴퓨터에 전화기능을 부여한 CTI서버를 개발한 (주)로커스는 새로운 정보통신문화의 소개와 정착을 위해 매진하고 있다. 94년 사내에 정보통신연구소를 설립하여 6개 연구팀을 운영하고 있는 (주)로커스는 CTI에 인터넷을 통합한 CITI그리고 CITI에 텔레비전ㆍ위성통신을 하나의 커뮤니케이션 세계로 통합하는 mCITTI 기술개발도 진행하고 있다.

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기술개발성공사례 - (주)건인

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.30 no.5 s.336
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    • pp.28-29
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    • 1997
  • 노래방기기 모니터에 가사가 자막으로 처리되는 '영상자막 처리보드'를 국내 처음으로 개발한 (주)건인. 대당 3천만원씩 전량 일본에서 수입하던 이 제품을 대당 50만원씩 파격적인 가격으로 보급해 선풍을 일으킨 (주)건인은 올해 디지털 인공위성 수신기 자체개발로 제2의 변신을 시도하고있다.

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해외화제

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.17 no.7 s.182
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    • pp.23-26
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    • 1984
  • 불붙은 미,일의 선기술 경쟁 / 동케이블 통신위성은 사양길로 / 일본, 광집적회로개발 7천5백만불 투입 / 광섬유의 2대 이점 / 새연결 장치로 각광받는 단일모드형 / 연속생산 기대되는 VAD법 / 잠수함 탐지용으로도 이용

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EM Development of Dual Head Star Tracker for STSAT-2 (과학기술위성2호의 이중 머리 별 추적기 개발)

  • Sin, Il-Sik;Lee, Seong-Ho;Yu, Chang-Wan;Nam, Myeong-Ryong
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.34 no.2
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    • pp.96-100
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    • 2006
  • We develop the Dual Head Star Tracker (DHST) to obtain the attitude information of science and Technology Satellite2 (STSAT-2). Because most of star sensor has only one head camera, star recognition is impossible when camera point to sun or earth. We therefore considered the DHST which can obtain star images from two spots simultaneously. That is, even though we fail a star recognition from an image obtained by one camera, it is possible to recognize stars from an image obtained by the other camera. In this paper, we introduce engineer model (EM) of the DHST and propose a star recognition and a star track algorithm.

Image Data Transmission and Receiving System of KITSAT-3-Performance of initial operation (우리별3호 영상데이터 송수신 시스템 - 초기운용 성능 실험)

  • 신동석;김탁곤;최욱현
    • Korean Journal of Remote Sensing
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    • v.15 no.3
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    • pp.209-216
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    • 1999
  • KITSAT-3, the third satellite of KITSAT series which has been developed for the last four and half years with purely Korean design and implementation technology, was launched successfully at last. All subsystems were tested and validated during the initial operation of the satellite. During the initaial operation phase, the Earth imaging camera on board KITSAT-3 acquisited several tens of scenes all over the world and transmitted the image data to ground station. The quality of images and the reliability of data transmission-reception system were tested qualititively and quantititively, respectively. In this paper, we summarize the camera, data handling, on-board memory, and image data transmission system of KITSAT-3 as well as the image receiving and archiving system in ground station. The error rate of image data transmission and reception was tested during the initial operation phase. The average data transmission error rate satisfied the initial requirement of less than 1%. The error rate will be reduced through the continuous work of test and stabilization of the ground system hardware.