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Local goniometrical systems for determining the coordinates and the angular orientation of the onboard direction-finding antennas

DOI 10.18127/j15604128-201904-06

Keywords:

A.D. Vinogradov – Honored Inventor of RF, Dr.Sc.(Eng.), Professor, Main Research Scientist,  MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)
E-mail: mvvad@mail.ru
L.A. Minin – Ph.D.(Phys.-Math.), Associate Professor, Faculty of Physics, Voronezh State University
E-mail: mininla@mail.ru
E.Yu. Morozov – MA student, Faculty of Computer Science, Voronezh State University
E-mail: morozov.evgeniy.95@gmail.com
S.N. Ushakov – Ph.D.(Phys.-Math.), Lecturer, Faculty of Mathematics, Voronezh State University
E-mail: ushakowww@yandex.ru


Different variations of local goniometric navigation systems (LGNS) for determining the coordinates and angular orientation of onboard direction-finding antennas (ODFA) located on moving objects of air, sea or ground-based are considered. The autonomous goniometric navigation system – LGNS, in which the number of ground-based radio reference points was reduced to one, was considered in detail. For all the cases considered, equations were obtained that made it possible to determine the coordinates and the angular orientation of the onboard directional antennas based on the results of the elevation direction-finding of the radio reference points included in the system.
The article presents the LGNS scheme which makes it possible to eliminate the drawbacks of the model proposed in [1]. For this purpose, a mobile object is equipped with a radio reference point, and a radio direction-finding antenna is installed on one of the stationary reference points, which can produce azimuth-elevation radio direction-finding of the other radio-guides. It is shown that in this case the ambiguity that featured in the model from [1] is eliminated, but at the expense of a certain complexity of the structural elements of the system.
Also, an LGNS model is considered, in which the number of reference points is reduced due to the introduction of an additional moving object equipped with an onboard direction-finding antenna. This model also allows to determine the coordinates and angular orientation of both moving objects. Certain overdetermination of the system is present, which may allow additional error control.
Special consideration was given to the autonomous system, the structure of which assumes the presence of several mobile objects equipped with the ODFAs and altitude meters, and one ground control station capable of producing azimuth-elevation radio direction-finding of the ODFAs. In this case, it is possible to unambiguously determine the coordinates and the angular orientation of the onboard antennas.

References:
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