%0 Journal Article %T Group signal models and environmental influences %A Butyrskiy, E.Y. %A Saprykin, A.V. %A Yakovlev, A.I. %K group signal, group correlation function, generalized Fourier transform, coherence function, acoustic energy %J National Security and Strategic Planning %D 2022 %N 2021 %P 12 %I Strategy of the Future