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29 October 1989Distance Measurement Using Laser Diodes
The various techniques for accurate distance measurement using optical means may be subdivided as a) Time of flight measurement b) Intensity modulation c) Interferometric ranging including multi-source heterodyne interferometry and d) heterodyne frequency modulated continuous wave interferometry.
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B. T. Meggitt, A. W. Palmer, "Distance Measurement Using Laser Diodes," Proc. SPIE 1120, Fibre Optics '89, (29 October 1989); https://doi.org/10.1117/12.961006