Patent ID: 8894277

Claim:
A method for providing rapid linear heat detection through a region of interest using fiber optic distributed temperature systems comprising the steps of: a. deploying a fiber optic distributed temperature sensing cable through the region of interest; said fiber optic distributed temperature sensing cable connected to a distributed temperature measurement system; b. continuously measuring a temperature trace at multiple discreet points along the fiber optic distributed temperature sensing cable by collecting and measuring backscattered Stokes and Anti-Stokes signals; c. for each time t calculating a derivative or rate of change D from time t−1 to t of temperature at discreet points along the fiber optic distributed temperature sensing cable; d. calculating a corrected temperature Tc for time t at each discreet point along the fiber optic distributed temperature sensing cable based on a formula Tc=Tm+Kd*D; wherein Tm is the temperature measured at time t at each discreet point along the fiber optic distributed temperature sensing cable; and wherein Kd is a constant predetermined by experimental characterization of the response lag of the deployed fiber optic distributed temperature sensing cable.