The constant fraction discriminator in pulsed time-of-flight laser rangefinding

Ruitong Zheng; Guanhao Wu

doi:10.1117/12.916961

17 February 2012 The constant fraction discriminator in pulsed time-of-flight laser rangefinding

Ruitong Zheng, Guanhao Wu

Proceedings Volume 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging; 833208 (2012) https://doi.org/10.1117/12.916961
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

Constant Fraction Discriminator (CFD) is one of the theoretic method which can locate the timing point at same fraction of the echo pulse in pulsed Time-of-Flight (TOF) laser rangefinding. In this paper, the theory of CFD method was analyzed in reality condition. The design, simulation and the PCB performance of the CFD circuit were shown. At last, the over amplify method was introduced. By which, the influence of DC bias error could be reduced. The experimental results show that our timing discriminator can set the timing point does not depend on the amplitude of echo pulse.

Citation Download Citation

Ruitong Zheng and Guanhao Wu "The constant fraction discriminator in pulsed time-of-flight laser rangefinding", Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 833208 (17 February 2012); https://doi.org/10.1117/12.916961

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