REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

PR-15 radar signals: Measurements and analysis

SLOBODAN SIMIĆ

Military Academy, Belgrade, Serbia, simasimic01@gmail.com

ALEKSA J. ZEJAK

RT-RK Computer based systems, Novi Sad, Serbia, aleksa.zejak@rt-rk.com

ZORAN GOLUBIČIĆ

Peripolis – elektronika, Belgrade, Serbia, golubicic.zoran@gmail.com

Abstract: This paper presents the results of testing in the field of portable surveillance radar PR-15. A representative signal set was obtained by measurements in real conditions and analyzed by MATLAB®. Bearing in mind the two basic modes of radar, acquired signals are separated into two subsets. The first one consists of short-time signals, with duration of order 100 milliseconds, obtained by simultaneous observation of all range cells. The second of them consists of long-time signals, with duration of order tens of seconds, obtained by continuous observation of the resolution cell where target is detected. Signals from the first subset are analyzed in range-Doppler plane by cross ambiguity function resulting in range-Doppler radar images. This is a base for detection and classification-while-scan in PR-15 radar. Signals from the second subset are analyzed in time-frequency domain by spectrogram resulting in time-Doppler radar images. This is the base for classification and target activity analysis in the observed range cell.

Keywords: radar, range-Doppler, time-Doppler.