Design of timing generator for laser rangefinder

Haochen ZHAO; Chun XIONG; Pengcheng XIAO; Rongfu ZHANG

doi:10.3969/j.issn.1005-5630.2020.04.013

Journals >Optical Instruments >Volume 42 >Issue 4 >Page 82 > Article

Optical Instruments
Vol. 42, Issue 4, 82 (2020)

Design of timing generator for laser rangefinder

Haochen ZHAO¹, Chun XIONG¹, Pengcheng XIAO², and Rongfu ZHANG^1,*

Author Affiliations

¹School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

²School of Microelectronics, Fudan University, Shanghai 201203, China

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DOI: 10.3969/j.issn.1005-5630.2020.04.013 Cite this Article

Haochen ZHAO, Chun XIONG, Pengcheng XIAO, Rongfu ZHANG. Design of timing generator for laser rangefinder[J]. Optical Instruments, 2020, 42(4): 82 Copy Citation Text

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Abstract

In order to improve the ranging accuracy, the internal timing module of the laser rangefinder is studied. The factors affecting the ranging accuracy of the laser rangefinder are analyzed. An external delay chain chip is used as the delay line to design and make a timing generator based on the field programmable gate array (FPGA) development board. The test results show that the designed timing generator can achieve 11 ps timing resolution and a maximum data rate of 600 Mbit/s, which has achieved the expected target.

Keywords

FPGA laser ranging programmable delay line timing generator