Improvement of range precision in laser detection and ranging system by using two Geiger mode avalanche photodiodes (AH) 김태훈-제1 및 교신저자

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In this paper, the improvement of range precision in a laser detection and ranging (LADAR) system by using two Geiger mode avalanche photodiodes (GmAPDs) is described. The LADAR system is implemented by using two GmAPDs with a beam splitter and applying comparative process to their ends. Then, the timing circuit receives the electrical signals only if each GmAPDs generates electrical signals simultaneously. Though this system decreases the energy of a laser-return pulse scattered from the target, it is effective in reducing the range precision. The experimental results showed that the average value of standard deviation of time of flights was improved from 61 mm to 37 mm when the pulse energy is 0.6 mu J. When the time bin width is 0.5 ns, the single-shot precision error of the LADAR system was also improved from 280 mm to 67 mm. (C) 2013 AIP Publishing LLC.
Publisher
AMER INST PHYSICS
Issue Date
2013-06
Language
English
Article Type
Article
Citation

REVIEW OF SCIENTIFIC INSTRUMENTS, v.84, no.6

ISSN
0034-6748
DOI
10.1063/1.4811459
URI
http://hdl.handle.net/10203/175513
Appears in Collection
PH-Journal Papers(저널논문)EE-Journal Papers(저널논문)
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