A.V. Chernousov, A.V. Kuzovnikov, V.G. Somov

In the second half of XX century rapid development and growth the numbers of space satellite systems have begun. But, because of the frequency-s bands is a limited resource, problems concerning providing reliable communication in case of influence of random or premeditated countermeasures have been appeared. In this case, recently, wideband communication systems have become widespread. In these systems new information carrier - ultra wide band signal is used. Usage of this signal allows to create ultra wide band communication systems, which have high protection ratio and protect transferable information against unauthorized access. In article scheme of forming wideband signals for communication satellite systems by using of nonharmonic carriers - wavelet signals has been suggested. Analysis of efficiency of wanted signal frequency band widening by different parameters of active wavelet function has been performed. Also research of influence of additive narrow-band interference and additive white Gaussian noise on generated wavelet modulated signal has been conducted.