Browsing Staff publications (SoE) by Author "Nobes, David S."

Browsing Staff publications (SoE) by Author "Nobes, David S."

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  • Ford, Helen D.; Nobes, David S.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2001-12-31)
    A single-camera Planar Doppler velocimetry system has been demonstrated, in which illumination beams at two closely-spaced optical frequencies are derived from a single Argon-ion laser. The frequency of one beam lies on ...
  • Nobes, David S.; Wieneke, B.; Tatam, Ralph P. (Spie -- the Int Soc for Optical Engineering, 2004-02-28)
    The measurands of several reported laser-based measurement techniques are sensitive to both the propagation direction of the laser and the viewing direction from the region of interest to the detector. For such ...
  • Charrett, Thomas O. H.; Ford, Helen D.; Nobes, David S.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2003-12-31)
    A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a ...
  • Nobes, David S.; Ford, Helen D.; Tatam, Ralph P. (Springer Science Business Media, 2004-01-01)
    Abstract This paper describes a planar Doppler velocimetry (PDV) technique that is capable of measuring the three, instantaneous and time average components of velocity over two spatial dimensions using a single pair of ...
  • Charrett, Thomas O. H.; Nobes, David S.; Tatam, Ralph P. (Osa Optical Society of America, 2007-07-01)
    A method for the calculation of three orthogonal velocity components in planar Doppler velocimetry (PDV) using four or more measured velocity components (to the three typically used) is presented. The advantages and ...

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