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Journal Nanotechnology : the development , application - XXI Century №1 for 2016 г.
Article in number:
Forming of radiowave imaging of a target using probing nanosecond radiopulses
Keywords: nanosecond radiopulses ultrashort pulses ultrawideband signals ultrashortpulse radiolocation active radiovision radi-owave imaging of a target
Authors:
E.V., Mitrofanov - Post-graduate Student, V.A. Kotelnikov Intstitute of Radio Engineering and Electronics of RAS, Russia, Moscow. E-mail: mitrofanov_ireran@mail.ru V.A. Cherepenin - Dr.Sc. (Phys.-Math.), Professor, Corresponding Member of RAS, V.A. Kotelnikov Intstitute of Radio Engineering and Electronics of RAS, Russia, Moscow. E-mail: cher@cplire.ru
Abstract:
Using probing signals with the bandwidth of frequencies from hundreds megahertz to units of gigahertz allows to create new highly informative radiolocation systems. The signals of such bandwidth potentially allow to receive radiowave imaging of a target, while traditional narrowband radiolocation systems allow to detect the target, but don-t allow to determine its form and type. Wideband and ultrawideband signals in time domain have small duration from units of nanoseconds to hundreds of picoseconds. Such short pulse reflecting from the target falls into the sequence of pulses, each of them complies with separate elements of the target, and this allows (while angle scanning) to renovate the form of the target. Radiowave imaging is being formed on the first screen of a radar without additional processing of distance portraits received at every scanning angle. In this paper the dependence of the radiowave imaging character, received in coordinates «angle - distance», from the probing radi-opulse duration is investigated; the specific characteristics of the nanosecond radiopulses reflection from model objects of various form and configuration of reflecting structure are investigated.
Pages: 3-14
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