We introduce a combined technique and the mathematical description for distance measurements using a femtosecond pulse laser in a long range and a fine resolution. For distance measurements, the maximum measurable range can be extended by combining measurement results from several different methods while requiring relationships between the different measurement uncertainties and unambiguity ranges. This paper briefly explains why the uncertainty of a rough measurement technique (RMT) should be, at least, smaller than the half unambiguity range of a fine measurement technique (FMT) in order to combine a FMT with a RMT. Further discussions about the total measurement range, resolution, and uncertainty for various optical measurement techniques are also discussed.
© 2012 Optical Society of Korea
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.7090) Lasers and laser optics : Ultrafast lasers
Original Manuscript: July 25, 2012
Revised Manuscript: August 20, 2012
Manuscript Accepted: September 26, 2012
Published: December 25, 2012
Ki-Nam Joo and Seung-Woo Kim, "Theoretical Considerations on Combined Optical Distance Measurements Using a Femtosecond Pulse Laser," J. Opt. Soc. Korea 16, 396-400 (2012)
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