Аннотация:An approach for accelerated simulating of the Doppler frequency spectra histogram (DFSIT) of a signal
from the laser Doppler flowmeter (LDF) using a Monte-Carlo method is suggested. An extra averaging
over permutations ofthe moving and stationary particles along the photon trajectories enables noticeably
less trajectories to be simulated in order to obtain an estimate of the DFSH with a pre-set accuracy as
compared with the traditional method. The convergence ofthe DFSH by this 'fast' method to that by the
traditional method is demonstrated for different experimental conditions and the computational time
advantage ofthe fast method is evaluated.