CPC G01D 5/35361 (2013.01) [G02B 6/4422 (2013.01)] | 15 Claims |
1. A computer-readable, non-transitory medium storing a program that causes a computer to execute a process, the process comprising:
acquiring a backward Rayleigh scattered light from an optical fiber composite overhead ground wire that is provided along an electrical power transmission line;
determining each of spectral densities of each of a plurality of frequencies of vibration of the optical fiber composite overhead ground wire, on a basis of the backward Rayleigh scattered light;
estimating a wind speed of a wind hitting the electrical power transmission line, on a basis of a first spectral density of a first frequency band including a natural frequency of the optical fiber composite overhead ground wire among the spectral densities; and
estimating a wind direction of the wind, on a basis of a second spectral density of a second frequency band which does not include the natural frequency of the optical fiber composite overhead ground wire among the spectral densities.
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