Signal processing technology of spectrum-analyzing laser Doppler velocimeter

zhou jian; long xingwu

Volume 22 Issue 08

Jul. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(08): 0-

zhang jun, jin zhenxing, zhong huihuang, et al. Design and characteristics of C-band resonant relativistic backward-wave oscillator[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

zhou jian, long xingwu. Signal processing technology of spectrum-analyzing laser Doppler velocimeter[J]. High Power Laser and Particle Beams, 2010, 22.

zhang jun, jin zhenxing, zhong huihuang, et al. Design and characteristics of C-band resonant relativistic backward-wave oscillator[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

zhou jian, long xingwu. Signal processing technology of spectrum-analyzing laser Doppler velocimeter[J]. High Power Laser and Particle Beams, 2010, 22.

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Signal processing technology of spectrum-analyzing laser Doppler velocimeter

1.
College of Opto-Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China

Publish Date: 2010-07-12

Abstract

Abstract

In order to enhance the accuracy of laser Doppler velocimeter, the method to track the laser Doppler signal and correct the frequency spectrum with frequency spectrum refinement and frequency spectrum correction method was put forward. The Doppler signal was studied by signal processing system. The results showed that the background signal and part of the noise were got rid of, signal-to-noise ratio was raised, and Doppler frequency was tracked so that the result agreed with the actual value and that the distinguishability of frequency spectrum was improved by frequency spectrum refinement algorithm and the corrected frequency agreed well with the actual value by frequency spectrum correction algorithm.
- signal processing,
- laser doppler,
- tracking filtering,
- frequency spectrum refinement,
- frequency spectrum correction

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