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A new approach to Doppler velocimetry applicable to speeds greater than 1 m/s is described. The method is based on the phenomenon of spectral modulation of a large bandwidth source, such as a white light source. Spectral modulation is obtained from an interferometer with a path difference larger than the coherence length of the illuminating source. The linear speed of a corner cube prism attached to the rim of a rotating disc has been measured experimentally.[Journal translation]
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Cielo et al. (1976) studied this question.
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