Zhurnal Radioelektroniki - Journal of Radio Electronics. ISSN 1689-1719. 2020. No. 2
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Full text in Russian (pdf)
Russian page

 

DOI  10.30898/1684-1719.2020.2.6

UDC 621.396.96

 

Analysis of the effect of nonuniform passive interference on the detection characteristics of inter-period processing

 

I.  E. Chukhlomin, R. B. Ryumin, V. V. Pavlik, N. A. Faizulin

JSC "Scientific research institute on measuring instrumentation - radio engineering complexes" (AO NIIIT-RK), Darvina 14, Chelyabinsk, 454087, Russia

The paper is received on January 21, 2020, after correctionn - on February 10, 2020

Abstract. Adaptive processing of signals in the presence of passive interference is an actual task for different pulse radars. Adaptation to passive interference is based on the optimization of the processing algorithm depending on interference parameters, while a priori independent interference parameters are replaced with their estimates according to the adaptive Gaussian approach methodology. The interference parameters estimation is carried out by classified sampling, while the adopted approaches assume that the interference is stationary within the training window. In reality, passive interference is a non-stationary process, as a result of which the estimation of the interference parameters changes, which leads to a change in the detection characteristics. In most pulsed radars, this problem is not solved by the adaptive MTI, that’s why, the process of suppressing inhomogeneous passive interference remains actual. Analysis of correlated Gaussian interference nonuniformity effect on adaptive interperiod processing detection characteristics based on maximum likelihood evaluation of interfernce correlation matrix is carried out in the article. For the models of stepwise and linear change of interference intensity and two varieties of adaptive detectors, the dependences of false alarm probability and the correct detection on training sample size and interference location in the window are determined.

Key words: interference suppression, interperiod processing, detection characteristics, signal detector.

References

1. Popov D.I. Signal processing system optimization against background of passive clutter. Vestnik MEI – Proceedings of MEI. 2015. No.4. (In Russian)

2. Shirman J.D. Radioelectronnye sistemy. Osnovy postroeniya i teoriya: Spravochik. [Radio electronic systems. Fundamentals and theory: Reference guide]. Moscow, Radiotekhnika Publ. 2007. 510 p. (In Russian)

3. Popov D.I. Adaptive threshold devices. Izvestiya VUZ. Radioelectronika – Proccedings of Universities. Radio Electronics. 2006. Vol. 49. No. 3. P. 30-35. (In Russian)

4. Trukhachev A.A. Adaptivnye porogovye urovni v ustroistvakh obnaruzheniya radiolokatsionnykh signalov. [Adaptive threshold levels in radar signals detection devices]. Tambov, Yulis Publ. 2017, 342 p. (In Russian)

5. Galati G. Advanced radar techniques and systems. London. Peter Peregrinus Ltd. Institution of Electrical Engineers, 1993

6. Wiesbeck W. Lecture Script “Radar System Engineering”.  13th Edition WS 2006/2007. Institut für Höchstfrequenztechnik und Elektronik, Universität Karlsruhe.

7. Lekhovitskiy D.I., Ryabukha V.P., Zhuga G.A., Rachkov D.C., Semenyaka A.V. MTD in pulse radars. 5. Adaptive systems of Gaussian signals interperiod processing against background of Gaussian clutter. Applied Radio Electronics. 2011. Vol. 10. No. 4. P. 508-525. (In Russian)

8. Lekhovitskiy D.I., Flekser P.M., Polishko S.V.. On losses of coherent signal in the adaptive detector with non-coherent integration. Proceeding of IV International Conference on Antenna Theory and Techniques, 9-12 September 2003, Sevastopol, Ukrain, pp. 36-41.

 

For citation:

Chukhlomin I.E., Ryumin R.B., Pavlik V.V., Faizulin N.A. Analysis of the effect of nonuniform passive interference on the detection characteristics of inter-period processing. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No. 2. Available at http://jre.cplire.ru/jre/feb20/6/text.pdf

DOI  10.30898/1684-1719.2020.2.6