US 11,754,424 B2
Computer-readable non-transitory medium, estimation device and estimation method
Takahiro Arioka, Atsugi (JP)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Jun. 23, 2022, as Appl. No. 17/847,954.
Claims priority of application No. 2021-160265 (JP), filed on Sep. 30, 2021.
Prior Publication US 2023/0098933 A1, Mar. 30, 2023
Int. Cl. G01D 5/353 (2006.01); G02B 6/44 (2006.01)
CPC G01D 5/35361 (2013.01) [G02B 6/4422 (2013.01)] 15 Claims
OG exemplary drawing
 
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.