ADVANCED GRAM-SCHMIDT METHOD FOR RADAR SIGNAL PROCESSING

Authors

  • D. M. Piza National University “Zaporozhye Polytechnic”, Zaporozhye, Ukraine., Ukraine
  • S. N. Romanenko National University “Zaporozhye Polytechnic”, Zaporozhye, Ukraine., Ukraine

DOI:

https://doi.org/10.15588/1607-3274-2021-4-3

Keywords:

structural-parametric adaptation, active noise interference, spatial filter, suppression coefficient.

Abstract

Context. When protecting radar stations from active noise interference acting along the side lobes of the antenna directional pattern, spatial filtering of signals is used, which is realized by using antennas that are spaced apart in space. In this case, the difference in the directions of reception of the useful signal and the interference makes it possible to form the optimal value of the weighting coefficients of the adaptive spatial filters to suppress the interference. However, if the interfering source moves into the main beam region, then the spatial differences between the wanted signal and the interference are reduced. This leads to significant distortion of the main antenna radiation pattern. As a result, the accuracy of measuring the angular coordinates deteriorates, as well as the sensitivity of the radar receiver. The article proposes a structural-parametric method for adapting a spatial filter, which ensures effective operation of the radar when exposed to the active noise interference both from the direction of the side lobes and from the direction of the main beam.

Goal. Improving the efficiency of the radar when the active noise interference source is shifted from the direction to the side lobes to the direction of the main beam.

Method. The proposed method makes it possible, due to the structural adaptation of the multichannel spatial filter, to exclude the distortion of the main beam of the radiation pattern of the radar antenna and to ensure its operation under conditions of possible interference from the main beam. Structural adaptation of the spatial filter is realized by the current analysis of the weighting coefficients of the compensation blocks.

Results. The structural diagram of the multichannel spatial filter by the Gram-Schmidt method with structural-parametric adaptation, as well as the structural diagram of the compensation block, has been improved. As a result of the simulation, the possibility of eliminating distortions of the radiation pattern of the main antenna of the radar in conditions of the possible impact of the active noise interference along the main beam of the radiation pattern of the radar has been confirmed.

Conclusions. The scientific novelty of the work consists in the improvement of the signal-processing algorithm at spatial filtering both when exposed to the active noise interference from the direction of the side lobes, and when the interference source is shifted to the direction of the main beam of radar. The practical novelty of the work lies in the development of a structural diagram and a mathematical model of an improved spatial filter with structural-parametric adaptation.

Author Biographies

D. M. Piza, National University “Zaporozhye Polytechnic”, Zaporozhye, Ukraine.

Dr. Sc., Professor of the Department of Radio Engineering and Telecommunications.

S. N. Romanenko, National University “Zaporozhye Polytechnic”, Zaporozhye, Ukraine.

PhD, Associate Professor of the Department of Information Security.

References

Radioelektronnye sistemy: Osnovy postroeniya i teoriya. Spravochnik. Izd. 2-e, pererab. i dop. Pod red. Ya. D. Shirmana. Moscow, Radiotekhnika, 2007, 512 p.

Perunov Yu. M., Macukevich V. V., Vasil’ev A. A. pod red. Yu. M. Perunova Zarubezhnye radioelektronnye sredstva, v 4-h knigah. kn.2: Sistemy radioelektronnoj bor'by. Moscow, “Radiotekhnika”, 2010, 352 p.

Lekhovickij D. I., Ryabuha V. P., Semenyaka A. V., Atamanskij D. V., Katyushin E. A. Zashchita kogerentnoimpul'snyh RLS ot kombinirovannyh pomekh. 1. Raznovidnosti sistem PVOS i ih predel’nye vozmozhnosti, Izvestiya vuzov. Radioelektronika, 2019, No. 7, pp. 380–412.

Piza D. M., Semenov D. S. Povyshenie effektivnosti prostranstvenno-vremennoj obrabotki radiolokacionnyh signalov v usloviyah vozdejstviya kombinirovannyh pomekh, Izvestiya vysshih uchebnyh zavedenij. Radioelektronika, 2020, Vol. 63, No. 5, pp. 300–309. DOI: 10 20535/S0021347020050040

Adaptive cancellation arrangement, Patent 1 599 035 United Kingdom, IPC G01 S 7/36 13/52; index at acceptance H4D 259 265 36X 40X; filed 31 Mar. 1977; published 30 Sep. 1981, Access mode: http://www.directorypatent.com/GB/1599035-a.html.

Shirman Ya. D., Manzhos V. N. Teoriya i tekhnika obrabotki radiolokacionnoj informacii na fone pomekh. Moscow, Radio i svyaz’, 1981, 416 p.

Piza D. M., Semenov D. S. Metod strukturnoparametricheskoj adaptacii prostranstvennogo fil’tra, Radio Electronics, Computer Science, Control, 2020, No. 3, pp. 22–30. DOI: /10.15588/1607-3274-2020-3-2.

Harlamov A. V. Postroenie adaptivnoj prostranstvennopolyarizacionnoj sistemy zashchity RLS ot aktivnyh shumovyh pomekh s proizvol’noj prostranstvennoj strukturoj. Sistemi obrobki іnformacії, 2010, Vyp. 2, pp.182–187.

Monzingo R. A., Miller T. U. per. s angl. pod red. V. A. Lesachenko Adaptivnye antennye reshetki. Vvedenie v teoriyu. Moscow, Radio i svyaz’, 1986, 448 p.

Pіza D. M., Semenov D. S. Pat. 141813 Ukraїna, MPK G01 7/36, N04V 15/00. Bagatokanal'nij pristrіj adaptivnoї kompensacії zavad, dіyuchih po bokovih pelyustkah dіagrami spryamovanostі anteni; zayavnik і patentovlasnik NU “Zaporіz'ka polіtekhnіka”, № U201910675, Zayavl. 01.11.2019; Opubl. 27.04.2020, Byul. № 8.

Downloads

Published

2022-01-05

How to Cite

Piza, D. M., & Romanenko, S. N. (2022). ADVANCED GRAM-SCHMIDT METHOD FOR RADAR SIGNAL PROCESSING . Radio Electronics, Computer Science, Control, (4), 26–33. https://doi.org/10.15588/1607-3274-2021-4-3

Issue

No. 4 (2021): Radio Electronics, Computer Science, Control

Section

Radio electronics and telecommunications

License

Copyright (c) 2022 Д. М. Піза, С. М. Романенко

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons Licensing Notifications in the Copyright Notices

The journal allows the authors to hold the copyright without restrictions and to retain publishing rights without restrictions.

The journal allows readers to read, download, copy, distribute, print, search, or link to the full texts of its articles.

The journal allows to reuse and remixing of its content, in accordance with a Creative Commons license СС BY -SA.

Authors who publish with this journal agree to the following terms:

  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License CC BY-SA that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.