Abstract: Apparatus for a spatially resolved temperature measurement, with at least one optical fiber (6) for the spatially resolved temperature measurement, and at least one laser light source (2) producing light (3, 23) which can be coupled into the optical fiber (6), wherein the portions of the light (3, 23) backscattered in the optical fiber (6) can be coupled out of the optical fiber (6) and evaluated. The apparatus further includes means for reducing polarization-induced effects, wherein the means may be, for example, a polarization modifier (4) capable of at least partially depolarizing the light (3).

Abstract: A method and system for determining a physical property as a function of position. A data series including data point from one or more channels is obtained by frequency modulation continuous wave. A number of data points correspond to Nda different values of frequency of modulation. One or more processing steps are performed including at least part of said primary data series to obtain at least one secondary data series comprising N (N>Nda) data points from the values of frequency of modulation. The secondary data series from frequency domain is transformed to obtain at least one back scattering curve in space domain, and optionally the back scattering curve(s) to one or more physical properties as a function of position.

Abstract: With the proposed invention a method for configuring a measuring arrangement for physical, more particularly thermal conditions over a section to be measured is indicated, comprising at least one locally distributed sensor. The measuring arrangement consists of programmable modules with the minimum characteristics of acquire, edit, save, represent and signal measurement data of at least one distributed sensor. The method according to the invention consists in the fact that zone-specific data of the section to be measured are assigned to zone-specific measured quantities, and that these data are combined into data groups, and that the modules are configured with parameter sets with which editing steps of the individual modules are functionally assigned to one another. One parameter set preferably includes at least sensor-specific parameters; measuring instrument-specific parameters; organization of data and programs; organization of hardware modules; representation of the data and communication parameters.