E.V. Kravtsov¹, M.O. Likhomanov², R.I. Riumshin³

1-3  MESC AF «N.E. Zhukovsky and Y.A. Gagarin Air Force Academy»

The penetration possibility of functional defeat broadband signals in the receiving tracts through the antennas, and in addition to them, limits the applicability of spatial and frequency cutting technologies, and the speed of protection devices is often disproportionate to the rate of amplitude rise signals. The problem of increasing the functional stability of radio-electronic means under these conditions can be solved by a special non-linear processing.

Purpose: to show the possibility of implementing the functional stability mode of frequency detection using the non-multiplicative processing procedure. On the basis of researches results devoted to increasing of functional stability of radio-electronic means receiving path elements, the algorithms which are synthesized on non-multiplicative processing procedure, and provide a functional stability mode for frequency detection are offered. The algorithmic scheme consisting of a bandpass filter and a frequency detector, which are built on the intersection procedure, was compared with the scheme consisting of a bandpass filter, a frequency detector with phase conversion of frequency modulation, which are built on the multiplication procedure and an amplitude limiter, which is built on the intersection procedure. In the course of computational experiment, the results of useful signal and normally distributed noise processing are obtained. They show that a scheme with a bandpass filter, which is built on the intersection procedure, has an advantage over a scheme with a limiter. The proposed algorithm gives a profit in noise immunity without much hardware cost. Technically, the non-multiplicative processing procedure is implemented on the available element base in analogue and digital form.

Kravtsov E.V., Likhomanov M.O., Riumshin R.I. Functionally stable algorithm of frequency detection based on non-multiplicative processing procedure. Radioengineering. 2021. V. 85. № 1. P. 44−52. DOI: 10.18127/j00338486-202101-06. (in Russian)

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