CORRELATED RANDOM SIGNAL GENERATOR Russian patent published in 2015 - IPC G06F7/58 G06F1/02 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and can be used to generate broadband random stationary signals with given characteristic and cross-spectral power densities. The apparatus comprises a single-processor computer, software for generating, based on given spectral densities S_x(f) and S_y(f), random signals in Rice-Pearson decomposition form with random phases Θ_i and Ω_i at each harmonic f_i, the phases defined by random sampling of a random value, one of which - Θ_i for the signal x(t) is uniformly distributed in the range [-π, π], and the other - Ω_i for the second signal y(t) is defined as the sum Ω_i=Θ_i+Δφ_i of the random value Θ_i and the random value Δφ_i, uniformly distributed in the range [-φ_i, φ_i], the boundaries of which are defined through the cross-spectral density S_xy(f) of random signals x(t) and y(t), followed by an inverse fast Fourier transform procedure, a digital-to-analogue converter module for converting the generated digital signals into analogue signals of the generator.

EFFECT: generating two random signals with a given coherence function.

1 dwg