Time-of-Flight Analysis of Three-Dimensional Imaging Laser Radar Using A Geiger-Mode Avalanche Photodiode

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概要

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• A laser radar system, direct-detection three-dimensional imaging laser radar using a Geiger-mode avalanche photodiode (APD) is introduced in this paper. The system consists of a passively Q-switched microchip laser as a light source, a Geiger-mode APD as a detector, a time-to-digital converter (TDC) as a signal processor, and a customized algorithm for three-dimensional visualization. Due to the extremely high sensitivity of the detector, the system has the ability to detect a target that is obstructed by a sparse obstacle. The combination of both the detector having short dead time and the TDC having a multi-stop function enables the system to operate in a single- or a multi-hit mode during the acquisition of time-of-flight data. It has been shown experimentally that the multi-hit mode is more efficient in detecting the objects behind a sparse obstacle than the single-hit mode.

• 2010-02-25

著者

• Oh Min

  Department Of Metallurgical Engineering School Of Materials Science And Engineering Yonsei Universit

• Kong Hong

  Department Of Physics Kaist

• Kim Tae

  Department Of Anesthesia And Pain Medicine School Of Medicine Pusan National University

• Tae Hoon

  Department of Physics, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea

• Dong Jo

  Department of Electrical Engineering, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea

• Keun Ho

  Department of Physics, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea

• Byung Wook

  Department of Electrical Engineering, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea

• Min Seok

  Department of Physics, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea

• Oh Min

  Department of Display and Electronic Information Engineering, Soonchunhyang University, Asan, Chungnam 336-745, Korea

• Kim Tae

  Department of Advanced Materials Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Republic Korea

• Oh Min

  Department of Biomedical Engineering, Inje University

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