O.N. Maslov, T.A. Scherbakova

Models of multiplicative processes, occurs in confidential information (CI) active protection system (APS) are discussed in the article. Signal-error probability formulas for signals which contain CI have been derived for following initial conditions: no coherent and coherent reception of CI-signal with frequency telegraphy; no coherent and coherent reception of CI-signal with differential phase telegraphy; transfer constant of CI leakage path distribution laws: uniform, truncated normal, one-sided normal and one-sided exponential. Performance evaluation of APS CI with an active multiplicative interference are introduced in the article. Application of «slow» multiplicative interference in APS CI is similarly to effects of radio-signal decay and stochastic amplitude modulation of CI-signals. Conclusion about the availability of high-speed multiplicative interference and stochastic angle modulation (phase or frequency modulation) of CI-signals application in APS CI has been done. It is suggested to research the efficiency of perspective APS CI with help of statistic imitation modeling method.