Журнал «Радиотехника» | Издательство РАДИОТЕХНИКА

T. A. Lepekhina - Ph.D. (Eng.), JSC «Concern «Vega». E-mail: tatonika@inbox.ru
V. I. Nikolaev - Deputy Head of Department, JSC «Concern «Vega». E-mail: vnikolaev65@inbox.ru

A digital radar technique for locking-on and tracking an object equipped with a transponder

O.S. Agafonov - Leading Engineer, JSC "MSDB "Almaz-Antey -
E.D. Anufrikov - Head of Department, JSC "MSDB "Almaz-Antey -
V.V. Vinogradov - Ph.D. (Eng.), Head of Department, JSC "MSDB "Almaz-Antey?. E-mail: finn-vvv@mail.ru
A.I. Danilenko - Dr.Sc. (Eng.), Head of Special Design Bureau, STC "Altair" JSC "MSDB "Almaz-Antey?

The detection method of signal with noise hindrances using giant-pulse radar

A. L. Priorov - Dr.Sc. (Eng.), Associate Professor, P.G. Demidov Yaroslavl State University. E-mail: andcat@yandex.ru
E. E. Tsubanov - Lecturer, Department of Radio Engineering systems, a branch of the Mozhajskij Military Space Academy (Yaroslavl). E-mail: tzubаnoff.еvgeny@уаndex.ru

SAM lock-on method in an NAVY radar with its having an adaptive space frequency time processing of signals

D.А. Gorskiy - Ph.D. (Eng.), JSC «Almaz-Antey». E-mail: gordmiand@rambler.ru А.I. Danilenko - Dr.Sc. (Eng.), Head SKB, STC «Altair» JSC «Almaz-Antey». E-mail: tubeman@mail.ru V.V. Vinogradov - Ph.D. (Eng.), Head of Department, STC «Altair» JSC «Almaz-Antey». E-mail: tubeman@mail.ru А.V. Nikonorov - Deputy Head of Department, STC «Altair» JSC «Almaz-Antey». E-mail: tubeman@mail.ru S.А. Uryupin - Leading Engineer, STC «Altair» JSC «Almaz-Antey». E-mail: tubeman@mail.ru

The simulation results of the detector pulse signal with noise hindrances

A.L. Priorov - Dr.Sc. (Eng.), Associate Professor, P.G. Demidov Yaroslavl State University. E-mail: andcat@yandex.ru Е.Е. Tsubanov - Teacher of Faculty, Department of Radio Engineering Systems, Branch of the Mozhajskij Military Space Academy (Yaroslavl). E-mail: tzubаnoff.еvgeny@уаndex.ru

Study of micro-Doppler echo-signals structure for propeller aircrafts

G.G. Belyaev - Post-graduate Student, Scientific Research Institute «Gradient» (Rostov-on-Don); Chief of Group, JSC «KB «SVIAZ» (Rostov-on-don). E-mail: geo.welcome@gmail.com A.M. Lerer - Dr. Sc. (Phys.-Math.), Professor, Department of Applied Electrodynamics and Computer Simulation, Southern Federal University (Rostov-on-Don); Main Research Scientist, JSC «KB «SVIAZ» (Rostov-on-don). E-mail: lerer@sfedu.ru V.N. Shevchenko - Dr. Sc. (Eng.), Professor, Head of Research and Technical Development Center, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsvyaz.ru

Classification methods aerial objects in bistatic radar

A.A. Makeev - Head of Sector of Hardware and Software for Digital Signal Processing, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsvyaz.ru V.N. Shevchenko - Dr. Sc. (Eng.), Professor, Head of Research and Technical Development Center, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsvyaz.ru

Results of experimental studies for small aircrafts classification attributes in the hide multistatic radars

G.G. Belyaev - Post-graduate Student, НИИ Градиент, Head of Sector, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: geo.welcome@gmail.com A.A. Makeev - Post-graduate Student, НИИ Градиент, Head of Sector, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: alik_m@inbox.ru Yu.N. Chernyatiev - General Director JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsviaz.ru V.N. Shevchenko - Dr. Sc. (Eng.), Professor, Head STC, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsvyaz.ru

Protection of communication channel with the cooperated object in pulse-Doppler radar

A.I. Danilenko - Dr. Sc. (Eng.), Head of Department, PJSC «NPO Almaz» (Moscow) A.V. Nikonorov - Deputy Commander of Department, PJSC «NPO Almaz» (Moscow). E-mail: tubeman@mail.ru

Registration of fluorocarbon compounds by <sup>19</sup>F MRI method at low and high fields

D.V. Volkov - Student, Faculty of Physics, Lomonosov Moscow State University E-mail: mdanf1@gmail.com M.V. Gulyaev - Ph. D. (Phys.-Math.), Research Scientist, Faculty of Fundamental Medicine, Lomonosov Moscow State University E-mail: mihon-epsilon@ya.ru O.S. Pavlova - Post-graduate Student, Faculty of Physics, Lomonosov Moscow State University E-mail: oleuf@mail.ru N.V. Anisimov - Dr. Sci. (Phys.-Math.), Senior Research Scientist, Faculty of Fundamental Medicine, Lomonosov Moscow State University E-mail: anisimovnv@mail.ru Y.A. Pirogov - Dr. Sci. (Phys.-Math.), Professor, Faculty of Physics, Lomonosov Moscow State University E-mail: yupi937@gmail.com

Measurement of magnetic gradients in MRI. Part 1. The model and algorithms

A.V. Protopopov - Post-graduate Student, Moscow Institute of Physics and Technology (State University), FSCC after the name of Dmitri Rogachev E-mail: proto.alex@hotmail.com

Measurement of magnetic gradients in MRI. Part 2. Experiments on phantoms

A.V. Protopopov - Post-graduate Student, Moscow Institute of Physics and Technology (State University), FSCC after the name of Dmitri Rogachev E-mail: proto.alex@hotmail.com

Semi-natural research of algorithms for additional signal processing in order to increase the angular resolution of the radar

A.L. Priorov - Dr.Sc. (Eng.), Associate Professor, P.G. Demidov Yaroslavl State University E-mail: andcat@yandex.ru E.E. Tsubanov - Lecturer, Yaroslavl Higher Military School of Air Defence E-mail: tzubаnoff.еvgeny@уаndex.ru

Simulation of functioning of radar systems in acoustic echo-free chamber

S.A. Klimov 1, S.S. Rachkovskiy 2, A.V. Ashichmin 3, M.A. Sviridov 4, А.N. Коvalencov 5

1–5 Air Defense Military Academy of the Armed Forces of the Russian Federation named after Marshal of the Soviet Union A.M. Vasilevsky (Smolensk, Russia)

Laser ranging and its features

Y.A. Kavin – Ph. D. (Eng.), Associate Professor, Odintsovo branch MGIMO

E-mail: kyuri777@yandex.ru

S.G. Vorona – Ph. D. (Eng.), Associate Professor, Odintsovo branch MGIMO E-mail: vorona_1953@mail.ru

Variation procedures of echo-signals detection in passive radar systems in real time

I.V. Donets – Ph. D. (Phys.-Math.), Associate Professor, Head of Sector, JSC «VNII «Gradient» (Rostov-on-Don) E-mail: ivdonets@rambler.ru

Ya.A. Reizenkind – Ph. D. (Phys.-Math.), Senior Research Scientist, JSC «VNII «Gradient» (Rostov-on-Don) E-mail: jar@ip.rsu.ru

V.N. Shevchenko – Dr. Sc. (Eng.), Professor, JSC «VNII «Gradient» (Rostov-on-Don)

Application of physical parameterization algorithms for detection of pathologies in rats at a 7T magnetic-resonance scanner

A.V. Protopopov – Post-graduate Student, Moscow Institute of Physics and Technology (State University)

(Dolgoprudniy, Moscow region); Federal Scientific Clinical Center of Children's Hematology, Oncology and Immunology n.a. Dmitry Rogachev (Moscow) E-mail: proto.alex@hotmail.com

M.V. Gulyaev – Ph.D. (Phys.-Math.), Senior Research Scientist, Faculty of Fundamental Medicine, M.V. Lomonosov Moscow State University E-mail: mihon-epsilon@ya.ru

Yu.A. Pirogov – Dr.Sc. (Phys.-Math.), Professor, Faculty of Physics, M.V. Lomonosov Moscow State University; National Research Nuclear University MEPhI, Engineering Physics Biomedical Institute E-mail: yupi937@gmail.com

Elimination of range measurement ambiguity in a radar system with a high pulse repetition rate with a description of the individual features of probing signals in the basis of set theory

V.S. Maryuhnenko1, V.M. Orlovsky2

1,2 Military Academy of the Strategic Missile Forces named after Peter the Great (Serpukhov, Russia)

Estimation of aircraft navigation parameters by a coherent radio altimeter taking into account errors in spectral processing of the echo signal

V.A. Bulanov1, M. Mussalam2, A.A. Ispulov3, A.Yu. Truschinsky4

1–4 MESC AF «N.E. Zhukovsky and Y.A. Gagarin Air Force Academy» (Voronezh, Russia)

Application of spectral analysis of a coherent radio altimeter signal to ensure aircraft navigation

V.A. Bulanov¹, M. Mussalam², S.L. Ivanov³, A.U. Truschinsky⁴

1−4 MESC AF «N.E. Zhukovsky and Y.A. Gagarin Air Force Academy» (Voronezh, Russia)

Measuring T2 relaxation time in MRI gradient echo sequences

In magnetic resonance imaging (MRI), the gradient recalled echo (GRE) sequence became a powerful tool for classification of biological tissues due its sensitivity to structural heterogeneities of mesoscopic and macroscopic scale. The atomic scale heterogeneities, determined by spin-spin interaction of protons, can be imaged in contrast of transverse relaxation time T2, obtained in spin-echo (SE) sequence. For many years, the SE sequence was the only way to measure T2 accurately because, in GRE sequence, this parameter is masked by more rapid decay of the signal due to magnetic gradients. First attempts to evaluate - even not exactly measure - T2 in GRE sequences revealed serious algorithmic problems. Recently introduced new solution to this problem - multipoint algorithm with clamping (MPC) - opens the possibility for accurate and fast measurements of T2 in GRE sequences. The present short communication presents quantitative statistical confirmation of its performance on phantoms. It is shown that MPC algorithm produces accurate measurements of T2 in GRE sequences with average discrepancies of about 2% on small magnetic heterogeneities and 8% on the large ones with Pearson coefficients in the range 0.9-0.95. Commonly accepted in practice evaluation of T2 on GRE sequences by means of monoexponential fitting (the so-called values) gives inadequate average values with errors of about 30% and Pearson coefficient of only 0.7.

Virtual means for prompt registration, processing and presentation of biomedical signals in the «Multimag» complex

S.G.Gurzhin
Ph.D. (Eng.), Associate Professor, Department «Information-measuring and biomedical engineering»,
Ryazan State Radio Engineering University, the Winner of the Lenin komsomol Prize in Science and Technology,
Laureate of the Ryazan Region
on Science and Technology and the Silver Medal n. a. Academician V.F. Utkin, Honorary Worker of Higher Professional Education of the Russian Federation
E-mail: gurzhin@mail.ru
V.I. Zhulev
Dr. Sc. (Eng.), Professor, Head of Department «Information-measuring and biomedical engineering»,
Ryazan State Radio Engineering University; Honored Worker of Higher School of Russian Federation,
Laureate of the Ryazan Region on Science and Technology and the Silver Medal n.a. Academician V.F. Utkin
E-mail: zhulev.v.i@rsreu.ru
M.B. Kaplan
Ph.D. (Eng.), Associate Professor, Department «Information-measuring and Biomedical Engineering»,
Ryazan State Radio Engineering University
E-mail: mik_kap2001@mail.ru
V.G. Krjakov
Ph.D. (Eng.), Associate Professor, Department «Information-measuring and biomedical engineering»,
Ryazan State Radio Engineering University, Laureate of the Ryazan Region on Science and Technology
n.a. Academician V.F. Utkin
E-mail: iit@rgrtu.ryazan.ru
E.M. Proshin
Dr.Sc. (Eng.), Professor, Department «Information-measuring and biomedical engineering»,
Ryazan State Radio Engineering University; Honorary Worker of Higher Professional Education of the Russian Federation,
Laureate of the Ryazan Region on Science and Technology n.a. Academician V.F. Utkin
E-mail: proshin39@mail.ru
A.V. Shuljakov
Senior Lecturer, Department «Information-measuring and biomedical engineering»,
Ryazan State Radio Engineering University
E-mail: shul_andr@mail.ru

Search algorithm for the reflected signal of a satellite radio altimeter

А.E. Zhesterev1, V.P. Ipatov2

1,2 JSC "Russian Institute of Radionavigation and Time" (St. Petersburg, Russia)

Marked structures of probing signals for identification in joint channel of complex processing radar data in multiple-position system of small onboard radar

V.A. Nenashev1

1 St. Petersburg State University of Aerospace Instrumentation (SUAI) (St. Petersburg, Russia)

Approbation of radar imaging algorithms for passive location in the FM broadcasting range

S.V. Bessonov1, I.V. Donets2, V.S. Onishchenko3, Ya.A. Reizenkind4, A.M. Lerer5, V.N. Shevchenko6

1−6 JSC «All-Russian Scientific Research Institute «Gradient» (Rostov-on-Don, Russia)

2,4,5 Southern Federal University (Rostov-on-Don, Russia)

1 rostov@gradient-rnd.ru, 2 igor_don2002@mail.ru, 3 vsonish@yandex.ru, 4 jar@sfedu.ru, 5 lerer@sfedu.ru

Problems of analysis and modeling of non-stationary systems and signals with delay in a feedback loop

D.V. Beylekchi1, V.A. Ermolaev2, A.A. Kolpakov3, A.Yu. Proskuryakov4

1–4 Murom Institute of Vladimir State University (Murom, Russia)
1 desT.087@gmail.com