In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 49, No. 2R ( 2010-02-01), p. 026601-
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.49.026601
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2010
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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