I.M. Lerner - Ph.D. (Phys.-Math.), Senior Research Scientist, Doctoral Student, Kazan National Research Technical University named after A.N. Tupolev (KNRTU-KAI). E-mail: aviap@mail.ru M.I. Khayrullin - Post-graduate Student, Engineer, Kazan National Research Technical University named after A.N. Tupolev (KNRTU-KAI). E-mail: haimarat00@mail.ru G.I. Il-in - Dr.Sc. (Phys.-Math.), Professor, Honored Worker of Science and Technology of Russia, Head of Department, Kazan National Research Technical University named after A.N. Tupolev (KNRTU-KAI). E-mail: igivm@mail.ru

The comparative analysis of common methods for phase detection of the radio signal used in the mathematical modeling programs are performed, showing their disadvantages. The necessity of creating a method that provides lagless phase detection of a radiosignal at the output of linear passband system with asymmetrical amplitude frequency and phase frequency response and allows us to solve the problem of the so-called «amplitude, phase, frequency».

 

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