Sf. Collins et al., A SIMPLE LASER-DIODE RANGING SCHEME USING AN INTENSITY-MODULATED FMCWAPPROACH, Measurement science & technology, 4(12), 1993, pp. 1437-1439
A simple frequency modulated continuous wave (FMCW) optical sensor usi
ng intensity modulated light, for use in non-contact ranging applicati
ons, is discussed. Results over a range of several metres were obtaine
d with an accuracy of a few centimetres.