S.V. Dvornikov – Dr.Sc.(Eng.), Professor, S.M. Budjonny Military Academy of Signal Corps (Saint Petersburg) E-mail: practicdsv@yandex.ru
S.S. Dvornikov – Head of Department, S.M. Budjonny Military Academy of Signal Corps (Saint Petersburg) E-mail: dvornikov_s_s@mail.ru
A.F. Kryachko – Dr.Sc.(Eng.), Professor, Head of Department of Radio Technical and Optoelectronic Complex, Saint-Petersburg State University of Aerospace Instrumentation
E-mail: alex_k34.ru@mail.ru
A.I. Tyurina – Student, Saint-Petersburg State University of Aerospace Instrumentation
Questions of ensuring spectral efficiency for signals of phase modulation are considered. It is offered to form due to double modulation signals with smooth change of a phase by transfer of discrete information. The choice of the index of modulation is proved. The results of modeling confirming legitimacy of the drafted theoretical provisions are represented.
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