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For distributed temperature sensing often a code correlation technology [2] [3] [4] is employed which carries elements from both principles. OTDR was developed more than 20 years ago and has become the industry standard for telecom loss measurements which detects the—compared to Raman signal very dominant— Rayleigh backscattering signals.
By measuring the ratio in intensity between the Stokes and anti-Stokes components, an absolute value of temperature can be measured by a distributed temperature sensing (DTS) system. The larger wavelength shifts compared to Brillouin scatter mean that it is easier to separate the scattered Raman light from the un-shifted Rayleigh scattered ...
Distributed fibre-optic sensing (DFOS) technology is in use in the Americas, [18] Asia Pacific, Europe, and the Middle East, [19] as well as in Africa. [ 20 ] AP Sensing designed its Distributed Temperature Sensing (DTS) technology to monitor assets such as power cables and pipelines over large distances [ 5 ] as well as for fire detection in ...
Optical fiber sensors for temperature and pressure have been developed for downhole measurement in oil wells. [8] [9] The fiber-optic sensor is well suited for this environment as it functions at temperatures too high for semiconductor sensors (distributed temperature sensing).
Distributed temperature sensing, an optoelectronic temperature sensing device; Distributed transmission system, in broadcasting, as a form of single-frequency network; Diplomatic Telecommunications Service, a U.S. Department of State telecommunications network; Digital tomosynthesis, a medical imaging technique
Distributed acoustic sensing; Distributed temperature sensing; Dualex; E. Electro-galvanic oxygen sensor; Electro-optical sensor; Electrochemical fatigue crack sensor;
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