• Title/Summary/Keyword: range finder

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장거리 레이저 거리측정기 및 레이저 표적지시기 성능 평가를 위한 모사기 구현 (Implementation of the Simulator for Evaluating a Long-range Laser Range Finder and a Laser Target Designator)

  • 이영주;김용평
    • 전기학회논문지
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    • 제64권7호
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    • pp.1026-1030
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    • 2015
  • In this paper, we propose a signal processing board of an optical delay simulator for evaluating a long-range laser range finder and a laser target designator. We improved the accuracy by applying the clock multiplication and the correction of error gradient. To evaluate the performance of the proposed method, we implemented a prototype board and performed experiments. As a result, we implemented the optical delay simulator with resolution less than 0.7m in measuring distance 60km and a standard deviation of 0.041m. The PRF code detection logic and generation logic have a stability less than 0.03% and 0.08% compared to the NATO standard, respectively.

레이저 거리 측정기용 광 검출기 수신 감도 실시간 측정 시스템 구현 (Implementation of the Real-time Measurement System of Receiver Sensitivity for a Laser Range Finder)

  • 이영주
    • 전기학회논문지
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    • 제65권1호
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    • pp.108-111
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    • 2016
  • We propose the method for measuring sensitivity of optical receiver of a long-range laser range finder in real-time. The sensitivity of the detector can be calculated using the detected voltage of the reference sensor, the area of the reference sensor and the transmittance ratio of neutral density filters. To evaluate the performance of the proposed method, we implemented a system and performed experiments. As a result, this system can be measured from 2nW to $113{\mu}W$. With this system, we measured the sensitivity of 37nW and 7nW with PIN PD and APD sample, respectively. This system has the advantage for the performance test of an optical sensor module in the long-range laser range finder.

A Fast Map-matching Method using a Laser Range Finder

  • Moon, Jung-Hyun;You, Bum-Jae;Oh, Sang-Rok;Kim, Hag-bae
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.38.4-38
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    • 2002
  • We propose a fast map-matching algorithm based on the length and the slope for the sequence of lines extracted from a laser range finder and a map. After finding two feature set from laser data and a map, the position and heading of the mobile robot can be determined exactly.

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A Study on 3D Reconstruction of Urban Area

  • Park Y. M.;Kwon K. R.;Lee K. W.
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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    • pp.470-473
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    • 2005
  • This paper proposes a reconstruction method for the shape and color information of 3-dimensional buildings. The proposed method is range scanning by laser range finder and image coordinates' color information mapping to laser coordinate by a fixed CCD camera on laser range finder. And we make a 'Far-View' using high-resolution satellite image. The 'Far-View' is created that the height of building using DEM after contours of building extraction. The user select a region of 'Far View' and then, appear detailed 3D-reconstruction of building The outcomes apply to city plan, 3D-environment game and movie background etc.

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