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Improving the accuracy of tracking signals of local radio navigation frequency system using Doppler filtering

DOI 10.18127/j20700784-201911-05

Keywords:

А.А. Filippov – Dr.Sc. (Eng.), Professor, Department of Radio Engineering Systems, Saint-Petersburg State University of Aerospace Instrumentation 
E-mail: Filaleant@yandex.ru
А.N. Hlobistov – Deputy Head of Faculty, Department of Radio Engineering Systems, Saint-Petersburg State University of Aerospace Instrumentation
E-mail: xlob@mail.ru


One of the main directions of improving the accuracy and noise immunity of navigation systems of aircraft control systems (Aircraft) for delivering them to a given area is the creation of a complex of airborne radio navigation systems with multi-position radio navigation systems.
To develop a method for improving the accuracy of control of an aircraft under the conditions of exposure to typical active noise and Doppler noise.
A method for processing a navigation signal in aircraft consumer equipment is presented, based on using modulation caused by
vibrations of the aircraft body. With subsequent correlation processing of the signals of the reference stations, an increase in the signal-to-noise ratio by 6...8 dB is achieved. The accuracy of aircraft control in the conditions of interference using the proposed method is increased by 10...15 dB.
The proposed circuit of the signal tracking device in frequency can be used in the equipment of consumers of local radio navigation systems when placing it on aircraft for various purposes, carrying out flight along the route under the influence of active interference.

References:
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June 24, 2020
May 29, 2020

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