Protection of coherent pulse radars against combined interferences. 3. ALF-based digital adaptive system of sequential protection of programmed surveillance radars against combined interference

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

doi:10.3103/S0735272722020029

Authors

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

DOI:

https://doi.org/10.3103/S0735272722020029

Abstract

This is the third paper of a series of articles devoted to modern methods of protection of coherent pulse radars against the combined interference (an additive mixture of internal noise, masking noise jamming and clutter). For a programmed surveillance radar, a prototype of the digital adaptive system for sequential space-time processing (STSP) of signals against the background of masking combined interference is described. This system is based on the 15-input 13-stage parallel adaptive lattice filter (ALF) and 5-stage sequential ALF that are built on a field programmable gate array (FPGA) and digital signal processor (DSP). Results of the prototype testing of adaptive STSP system using an additive mixture of simulated active noise jamming from five sources and digital recordings of real clutter in an operating radar are presented. These results have confirmed the high adaptation efficiency of the system based on adaptive lattice filters to the masking combined interference.

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