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Scheme of ANI receiving by spaced antenna system

Efficiency estimation of discrete algorithms for adaptation of weight coefficients in space-time processing of radar signals

Dmytro M. Piza, Dmytro S. Semenov, Sergii V. Morshchavka


A comparative analysis of the efficiency of adaptive spatial filters with different methods of classified training sample formation under conditions of simultaneous exposure to active noise and passive interference is carried out. Based on the proposed methodology, analytical calculations of the changes in interchannel phase shifts for discrete algorithms for the adaptation of the weight coefficients of the spatial filter in various modes of operation of the 36D6 radar are carried out. It is shown that interchannel phase desynchronization/error arise at pause intervals in the adaptation of weight coefficients during antenna system scanning. The magnitude of these desynchronizations depends on the angular velocity of the antenna system rotation and on the repetition period of the radar pulses. An estimation of the suppression coefficient realized at the end of the pause in the adaptation of the weight coefficients taking into account the interchannel phase desynchronization is carried out. The recommendations on the choice of the formation method of the classified training sample under the conditions of the combined interferences are considered taking into account the losses that arise in case of discrete adaptation of the weight coefficients of the spatial filter.


adaptive spatial filter; combined interference; radar; interchannel desynchronization; interference suppression coefficient

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FALK, K. “A method and radar system for repetition jammer and clutter suppression,” US Patent WO2012067557A1. 27 Oct. 2015.

PIZA, D.M.; ZVIAHINTSEV, Ye.A.; MOROZ, G.V. “Method of compensating the active component of combined interference in coherent pulse radar,” Radioelectron. Commun. Syst., v.59, n.6, p.251, 2016. DOI:

WIDROW, B.; MANTEY, P.E.; GRIFFITHS, L.J.; GOODE, B.B. “Adaptive antenna systems,” Proc. IEEE, v.55, n.12, p.2143, 1967. DOI:

ABRAMOVICH, Yu.I.; KACHUR, V.G. “Speed of response of sequential tuning of separate combined interference compensation systems,” Radiotechnika i Elektronika, n.1, p.52, 1969.

RIABUKHA, V.P.; RACHKOV, D.S.; SEMENIAKA, A.V.; KATIUSHYN, Ye.A. “Estimation of spatial weight vector fixation interval for sequential space-time signal processing against the background of combined interferences,” Radioelectron. Commun. Syst., v.55, n.10, p.443, 2012. DOI:

WIDROW, B.; GLOVER, J.R.; MCCOOL, J.M.; KAUNITZ, J.; WILLIAMS, C.S.; HEARN, R.H.; ZEIDLER, J.R.; DONG, Jr. Eugene; GOODLIN, R.C. “Adaptive noise cancelling: Principles and applications,” Proc. IEEE, v.63, n.12, p.1692, 1975. DOI:

GRIGORYEV, V.V. Combined Signal Processing in Radiosystems [in Russian]. Moscow: Eko-Trends, 2002.

PIZA, D.M.; LAVRENTIEV, V.N.; SEMENOV, D.S. “Method of forming of the classified training sample for automatic canceller of the interferences when using time-space filtering of signals,” Radioelectronics, Computer Science, Control, n.3, p.18, 2016. DOI:

PIZA, D.M.; MOROZ, G.V. “Methods of forming classified training sample for adaptation of weight coefficient of automatic interference compensator,” Radioelectron. Commun. Syst., v.61, n.1, p.32, 2018. DOI:

MONZINGO, R.A.; MILLER, T.W. Introduction to Adaptive Arrays. Wiley-Interscience, 1980.

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