Dual source auto-correction in distributed temperature systems
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United States of America Patent
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Jul 30, 2013
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May 27, 2010
app pub date -
Jul 7, 2008
filing date -
Jul 18, 2007
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Abstract
An automatic and continuous method is presented to improve the accuracy of fiber optic distributed temperature measurements derived from Raman back scatterings utilizing two light sources with different wavelengths, by choosing the wavelengths of the two sources so the primary source's return anti-Stokes component overlaps with the incident wavelength of the secondary light source thereby canceling out the non-identical attenuations generated by the wavelength differences between Stokes and anti-Stokes bands.
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