By the adjustment of Eq. (14) we obtain the final
mathematical relation describing function principle of the
optical fiber DTS system on the basis of the Raman
stimulated scattering (15). This equation is a linear
combination of temperature offset (first part of the
equation), difference of attenuation in optical fiber
(second part of the equation) and temperature
measurement on the basis of the anti-Stokes to the Stokes
ratio (third part of equation):