Protection of coherent pulse radars against combined interferences. 4. Adaptive systems of space-time signal coprocessing against background of combined interference based on two-dimensional ALF

V. P. Riabukha; A. V. Semeniaka; Ye. A. Katiushyn; D. V. Atamanskiy

doi:10.3103/S0735272722070019

Authors

V. P. Riabukha LLC Radionix, Kyiv; Kharkiv National University of Radio Electronics, Kharkiv, Ukraine https://orcid.org/0000-0002-8607-9551
A. V. Semeniaka LLC Radionix, Kyiv; Kharkiv National University of Radio Electronics, Kharkiv, Ukraine https://orcid.org/0000-0002-1170-6151
Ye. A. Katiushyn LLC Radionix, Kyiv; Kharkiv National University of Radio Electronics, Kharkiv, Ukraine http://orcid.org/0000-0001-8200-7289
D. V. Atamanskiy Kharkiv National University of Radio Electronics; Ivan Kozhedub Kharkiv National Air Force University, Kharkiv, Ukraine https://orcid.org/0000-0002-8705-8584

DOI:

https://doi.org/10.3103/S0735272722070019

Abstract

This is the fourth paper in a series of articles devoted to modern methods of protection of coherent-pulse radars against the combined interference (i.e., an additive mixture of internal noise, masking noise jamming and clutter). It proposes the structures of an adaptive system of cooperative space-time signal processing (STSP) against the background of masking combined interference based on a two-dimensional adaptive lattice filter with matrix elementary lattice filters. These structures eliminate significant energy losses of adaptive systems of separate STSP caused by the non-classified nature of training samples of noise jamming and clutter in estimating the weight vectors of spatial and inter-period signal processing and the need to store the spatial weight vector during the time of inter-period compensation of clutter. The results of mathematical simulation of the developed parallel-sequential adaptive system of cooperative STSP with reduced number of complex multiplication operations as compared with direct inversion of interference correlation matrix are presented that confirm its high efficiency.

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