AIRCRAFT DIRECTION FINDING BY ESTIMATING THE DOPPLER FREQUENCY OF RECEIVED RADIO SIGNALS
Authors:
1.
Scientific and Technical Center of Chelyabinsk Radio Plant “Polyot”
2.
Scientific and Production Complex “TIM”
Type:
Article
Pages:
from 194
to 208
Status:
Published
Received:
20.09.2021
Accepted:
25.09.2021
Published:
25.09.2021
Subject area:
UDK 621.396 Аппаратура и методы радиосвязи
Language:
Russian
Keywords:
automatic direction finder, aircraft, Doppler filter, radio emission source, coherent accumulation, bearing, radio signal, radio communication station, Doppler frequency
Abstract (English):
The features of aircraft direction finding are considered by estimating the Doppler frequency that occurs during periodic circular reading of radio signals coming from aircraft radio stations to the annular antenna array of an automatic direction finder. The possibilities of forming and measuring the Doppler frequency of received radio signals are shown, the basic initial data for constructing the proposed variant of measuring the bearing of aircraft with radio emission sources are presented. The results of estimating the permissible values of the distance between neighboring elements and the radius of the antenna array ring, as well as the sensitivity of the phase difference and the Doppler frequency of the radio signals of neighboring elements to a change in direction to the radio source are presented.
The features of aircraft direction finding are considered by estimating the Doppler frequency that occurs during periodic circular reading of radio signals coming from aircraft radio stations to the annular antenna array of an automatic direction finder. The possibilities of forming and measuring the Doppler frequency of received radio signals are shown, the basic initial data for constructing the proposed variant of measuring the bearing of aircraft with radio emission sources are presented. The results of estimating the permissible values of the distance between neighboring elements and the radius of the antenna array ring, as well as the sensitivity of the phase difference and the Doppler frequency of the radio signals of neighboring elements to a change in direction to the radio source are presented.
Keywords:
automatic direction finder, aircraft, Doppler filter, radio emission source, coherent accumulation, bearing, radio signal, radio communication station, Doppler frequency
automatic direction finder, aircraft, Doppler filter, radio emission source, coherent accumulation, bearing, radio signal, radio communication station, Doppler frequency
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