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Signal classification in automated radiomonitoring systems

Keywords:

N. A. Testoedov – Corresponding Member of RAS, Head of Department of Space Information Systems, Siberian State Aerospace University named after M.V. Reshetnev; General Director, JSC “Information Satellite System – Reshetnev Company”
P. V. Semkin – Postgraduate Student, Siberian State Aerospace University named after M.V. Reshetnev Engineer of 1-st category, JSC “Information Satellite System – Reshetnev Company”. E-mail: psemkin@yandex.ru
A. V. Kuzovnikov – Ph.D. (Eng.), Associate Professor, Department of Space Information Systems, Siberian State Aerospace University named after M.V. Reshetnev Chief of Data Relay and Telecommunication Systems Department, JSC “Information Satellite System – Reshetnev Company”. E-mail: ujub@list.ru
V. G. Somov – Dr.Sc. (Eng.), Professor, Department of Electronics and Telecommunications, Siberian State Aerospace University named after M.V. Reshetnev


Modern receivers of global satellite navigation systems have a significant drawback – low noise immunity. Modernization of existing receivers by reducing the bandwidths of tracking systems , integral tracking a full set of signals from navigation satellites in all frequency bands , narrowband interference filtering (in the limit – harmonic ), providing direct entry in synchronization with the precision GLONASS signal (effective against narrowband interference), etc. makes it possible to provide functionality of navigation equipment at the consumer on the assumption that interference/signal ratio at the input of the receiving antenna is no more than 60...65 dB. Further improvement of navigation consumer equipment immunity to 80...85 dB is possible only with the application of spatial methods of interference suppression. The article describes the variants of construction of angle measuring system with functions of spatial selection of interference on the basis of the same antenna system.
References:

  1. Rembovskij A.M., Ashikhmin A.V., Koz'min V.A. Radiomonitoring: zadachi, metody, sredstva / pod. red.A.M. Rembovskogo. M.: Goryachaya liniya – Telekom. 2006.
  2. Shakhtarin B.I. Obnaruzhenie signalov. M.: Gelios ARV. 2006.
  3. Ramachandran B. Teoriya kharakteristicheskikh funkcij. M.: Nauka. 1975.
  4. Sklyar B. Cifrovaya svyaz'. Teoreticheskie osnovy i prakticheskoe primenenie / per. s angl. M.: ID «Vil'yams». 2003.

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