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Proceedings Paper

Unambiguous range extension of a phase-shift based lidar by using two laser diodes with different modulation frequencies
Author(s): Junhwan Jang; S. Hwang; Kyihwan Park
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Paper Abstract

In the phase-shift based lidar system, a distance between the lidar and an object can be determined via the phase difference between the reference signal and measured signal. The maximum unambiguous range for the phase-shift based lidar is inversely proportional to the modulation frequency of the signal. When the modulation frequency is increased for high distance resolution, the unambiguous range is decreased. In this paper, we described a method to extend the unambiguous range of the lidar, which is a considerable disadvantage of the phase-shift measurement method. In addition, we propose a method for implementing dual frequencies modulation technique with two laser diodes.

Paper Details

Date Published: 22 June 2013
PDF: 6 pages
Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87693A (22 June 2013); doi: 10.1117/12.2021259
Show Author Affiliations
Junhwan Jang, Gwangju Institute of Science and Technology (Korea, Republic of)
S. Hwang, Korea Photonics Technology Institute (Korea, Republic of)
Kyihwan Park, Gwangju Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 8769:
International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)
Chenggen Quan; Kemao Qian; Anand Asundi, Editor(s)

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