Temperature distribution measurement system, temperature distribution measurement apparatus, and temperature distribution measurement method

A temperature distribution measurement apparatus comprising:

• a laser light source optically connected to an optical fiber;
• a photodetector configured to detect light backscattered in the optical fiber;
• and
• a temperature distribution measurement unit configured to perform correction calculation using a transfer function on a measured temperature distribution obtained from an output from the photodetector, wherein
• the temperature distribution measurement unit acquires an actual temperature distribution in a location where the optical fiber is laid and determines appropriateness of the transfer function by computing a difference between the measured temperature distribution after the correction and the actual temperature distribution.

A temperature distribution measurement method comprising:

• inputting a measured temperature distribution obtained using an optical fiber into a temperature distribution measurement unit and correcting the measured temperature distribution by using a transfer function;
• inputting an actual temperature distribution in a location where the optical fiber is laid, into the temperature distribution measurement unit;
• causing the temperature distribution measurement unit to determine appropriateness of the transfer function through a comparison between the measured temperature distribution after the correction and the actual temperature distribution;
• and
• correcting the transfer function by using the measured temperature distribution before the correction and the actual temperature distribution when it is determined that the transfer function is inappropriate.