• Title/Summary/Keyword: Range Finder

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

  • Lee, Young-Ju;Kim, Yong-Pyung
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.7
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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.

  • https://doi.org/10.5370/KIEE.2015.64.7.1026 인용 PDF KSCI KPUBS HTML

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

  • Lee, Young-Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.1
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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.

  • https://doi.org/10.5370/KIEE.2016.65.1.108 인용 PDF KSCI

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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    • 2002.10a
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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.
    • Proceedings of the KSRS Conference
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    • 2005.10a
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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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