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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 764–768

Heterodyne Doppler velocity measurement of moving targets by mode-locked pulse laser

Yan Bai, Deming Ren, Weijiang Zhao, Yanchen Qu, Liming Qian, and Zhenlei Chen  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 764-768 (2012)

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In this study, heterodyne detection is adopted to measure the velocity of a target simulated by a rapidly rotating plate by using a mode-locked pulse laser as the resource. The coherent beat frequency of the signal light reflected by target and local oscillation light occurred on the surface of the detector. Then the waveform of beat frequency was processed by filtering to obtain the Doppler frequency shift of the signal light induced by target. With this frequency shift, the velocity of target could be obtained by calculation. Results indicate that the measurement has a high precision. The error on average is within 0.4 m/s.

© 2012 OSA

OCIS Codes
(040.2840) Detectors : Heterodyne
(140.4050) Lasers and laser optics : Mode-locked lasers
(280.3340) Remote sensing and sensors : Laser Doppler velocimetry

ToC Category:
Remote Sensing

Original Manuscript: September 30, 2011
Revised Manuscript: December 1, 2011
Manuscript Accepted: December 19, 2011
Published: January 3, 2012

Yan Bai, Deming Ren, Weijiang Zhao, Yanchen Qu, Liming Qian, and Zhenlei Chen, "Heterodyne Doppler velocity measurement of moving targets by mode-locked pulse laser," Opt. Express 20, 764-768 (2012)

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