Abstract. The automated laboratory
bench for objects scattered characteristics measuring in the frequency range
from 4 to 15 GHz is developed and approved. The main elements of the stand
are the vector network analyzer, the broadband antenna (1-17 GHz) and the
turntable. To suppress reflections from the walls, ceiling and floor of the range
and auxiliary equipment the time domain gating of the reflected signal and
subtraction of the background are used. The processing algorithm for reflected
signals is described and applied. The series of three transformations of the
received signal is performed: from the frequency domain to the time domain, the
selection of the time gate width and position, the transition from the time
domain to the frequency domain. The experiments series of comparing the
theoretical values of radar cross-section (RCS) with measured for some spheres
are performed. The analysis of the measurement data revealed the features of
the stand. Firstly, the duration and parameters of the time gate for the object
under test and the standard should be the same. Secondly, the transformation specificity
does not allow to use the beginning and end of the all measured frequency band.
The RCS of the 4 plastic spheres with a diameter of
300 mm with the conductive coating and the same sphere covered with silver were
measured. High repeatability of the scattering characteristics of five spheres
is noted. Monostatic RCS of angular reflectors and metal plates in C- and
X-bands are measured.
Key words: scattering
characteristics, calibration, radar cross-section (RCS), time domain, window Fourier
transform.
References
1. Fedorov I.B. Informacionnye tekhnologii
v radiotekhnicheskih sistemah. [The information technologies in radio
engineering systems]. Moscow, MSTU of N.E.Bauman Publ. 2011. 846 p.
(In Russian).
2. Skosyrev V.N. Increasing the information
content of radar systems based on the technology of ultra-wideband signals. Zhurnal
Radioelektroniki Journal of Radio Electronics, 2012, No. 7. Available
at
http://jre.cplire.ru/jre/jul12/9/text.htm
(In Russian).
3. Slukin G.P., Chapursky
V.V. Spatially multichannel distant range radar with high resolution. Radiotekhnika
Radioengineering, 2013, No. 11. pp. 24-34. (In Russian).
4. Verba V.S., Tatarskij
B.G., Majstrenko E.V. New technologies of radar monitoring of the earth's
surface for helicopter-type carriers. Zhurnal Radioelektroniki
Journal of Radio Electronics, 2018, No. 2. Available at
http://jre.cplire.ru/jre/feb18/4/text.pdf(In Russian).
5. Jian M., Lu Z., Chen V. C. Experimental study
on radar micro-Doppler signatures of unmanned aerial vehicles. 2017 IEEE Radar
Conference (RadarConf), pp. 0854-0857.
6. Artyushenko V.M.,
Volovach V.I. The analysis of parameters of the Doppler signal spectrum
reflected from a moving extended object. Zhurnal Radioelektroniki Journal
of Radio Electronics, 2015, No. 1. Available at
http://jre.cplire.ru/iso/jan15/13/text.pdf(In Russian).
7. Tarancev E.K., Konnov N.N. The
ways to improve the performance of software and hardware complexes of
pulse-Doppler radar type. Telekommunikacii Telecommunications, 2011,
No. 5. pp. 25-33. (In Russian).
8. Gandurin V.A., Kirsanov A.P. The
Peculiarity of a zone where low-altitude airborne objects are detected by means
of a pulsed-doppler radar. Radiotekhnika Radioengineering, 2007,
No. 10. pp. 42-46. (In Russian).
9. Kobak V.O. Radiolokacionnye
otrazhateli. [The radar reflectors]. Moscow, Sov. Radio Publ. 1975. 248 p.
(In Russian).
10. Bachurin V.S.,
Demenyov A.D., Pyshnyj V.D. The broadband ESR measurement method of
time-frequency transformations. Zhurnal Radioelektroniki Journal of Radio
Electronics, 2010, No. 7. Available at
http://jre.cplire.ru/jre/jul10/6/text.html
(In Russian).
11. Balabuha N.P., Zubov A.S., Solosin V.S.
Kompaktnye poligony dlya izmereniya harakteristik rasseivaniya. [The compact ranges for the dispersion characteristics
measurement]. Moscow, Nauka Publ., 2007, 266 p. (In Russian).
12. Bogdanov O.A. The reference radar measuring
complex ERIC-1. Radioehlektronnaya bor'ba v Vooruzhennykh Silakh Rossiyskoy
Federatcii Radio-electronic warfare in the Armed Forces of the Russian
Federation, 2015, pp. 90-91. Available at
https://reb.informost.ru/2015/pdf/34.pdf
(In Russian).