22 April 2006 Multi-target range finder with optical continuous frequency modulation
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Abstract
This paper presents new results on a scanning wavelength interferometer for absolute distances measurements. We report its performances on one and two simultaneous targets with a Fourier Transform Technique (FTT) and a regular sampling. Then the limitations of the FTT are discussed, especially with regard to the tunable laser source performances. Finally it concludes on the new results acquired by the use of a non-uniform sampling technique which reduces the non-linearities of the sweeping speed and demonstrates a relative uncertainty of some 10-6 for distances of 0.25 to 1 m.
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Luc Perret, Pierre Pfeiffer, Ayoub Chakari, "Multi-target range finder with optical continuous frequency modulation", Proc. SPIE 6189, Optical Sensing II, 61890I (22 April 2006); doi: 10.1117/12.662049; https://doi.org/10.1117/12.662049
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