Другие журналы

scientific edition of Bauman MSTUSCIENCE & EDUCATIONBauman Moscow State Technical University. El № FS 77  48211. ISSN 19940408
Radio Engineering and Communication
Composite Binary Sequences with a Large Ensemble and Zero Correlation Zone
# 06, June 2015 DOI: 10.7463/0615.0778119 pp. 235248
UltraWideband Printed Slot Radiators with Controllable Frequency Characteristics
# 05, May 2015 DOI: 10.7463/0515.0766224 pp. 190204
The Probing Radio Signal Polarization Effect on Separation Efficiency of Surface Target Response
# 03, March 2015 DOI: 10.7463/0315.0760670 pp. 140152
Antenna Parts and Waveguide Transmission Line of Short Pulse Radar System Design
# 12, December 2014 DOI: 10.7463/1214.0751309 pp.550559
Universal Library for Building Radar Operator Interface
# 12, December 2014 DOI: 10.7463/1214.0751383 pp. 560572
Radar Scan Methods in Modern Multifunctional Radars
# 12, December 2014 DOI: 10.7463/1214.0751253 pp. 573581
Multifunctional ShortRange Radar System for Distant Regional Airport Traffic Control
# 12, December 2014 DOI: 10.7463/1214.0751276 pp. 633644
Antenna Protective Shelters’ Design and Manufacturing Specificities
# 12, December 2014 DOI: 10.7463/1214.0751061 pp. 582592
Composite Technology in Radar Equipment. Dopler Meteo Radar Reflector Device
# 12, December 2014 DOI: 10.7463/1214.0749463 pp. 593606
Optimizing Untunable Matching Elements Sizes in the Transmission Lines
# 12, December 2014 DOI: 10.7463/1214.0744378 pp. 607618
Target Detection based on the Hough Transform
# 12, December 2014 DOI: 10.7463/1214.0738733 pp. 619632
Remote Identification of the Vibration Amplitude of Ship Hull
# 06, June 2014 DOI: 10.7463/0614.0715325 The paper proposes a development of the methodological support to determine vibration amplitude of the ship hull remotely using a coherent radar centimeter range on the variation of the Doppler signal spectrum reflected from a vibrating surface.It is proved that the level ratio of the spectral density at the frequency of vibration and at the frequencies of its multiples are determined by a single parameter – the phase modulation index, which is linearly related to the amplitude of vibration. As a result of field experiments it has been established that the energy of the surface gravity – capillary waves range has a high correlation with the wind speed. The paper shows a method of restrictions due to interference caused by the scattering a radio signal from the water surface.
A Novel Approach for SpaceTemporal Analysis of Tapered Slot Antennas
# 05, May 2014 DOI: 10.7463/0514.0710740 The paper presents a novel method for tapered slot antennas analysis in time domain. The method is based on «twostep» approximation, including both the radiating slot longitudinal segmentation and the fullwave model for each slot segment. Segment radiation is approximated using Green’s function for magnetic source on a conducting halfplane. Exploited earlier, mainly, for frequencydomain analysis of electrically long antennas, the method presented in this paper has been improved to apply it in analysis of arbitrary antenna shape. For the first time, timedomain antenna parameters were calculated using such approach for test geometries. Attained results have given evidence that the method is of high accuracy.
On a Class of Optimal Nonlinear Binary Sequences
# 04, April 2014 DOI: 10.7463/0414.0704644 An algorithm for generating ensembles of two classes N and Di nonlinear binary code sequences that are optimal in the sense of boundaries of packaging is presented. On the basis of this algorithm and its program realization in C#, ensembles of sequences of different lengths are obtained and their correlation properties are analyzed in detail. In the ensemble the sequences with the best properties are selected. The undoubted advantages of the N and Di sequences include the correlation properties and their substantial set of lengths. On the basis of the performed calculations the conclusions can be made about the prospect application of studied classes of sequences designed for spread spectrum systems with code division multiplexing.
Measuring phase difference of quasiharmonic signals in real time
# 07, July 2013 DOI: 10.7463/0713.0588392 The authors propose a digital method of measuring the phase shift of quasiharmonic signals with the same instantaneous frequency on a limited sample. A realtime algorithm was created on the basis of the specified method; the proposed algorithm was tested in numerical simulations and experiments at the developed hardwaresoftware package. The measurement error of the phase difference of harmonic signals in the experiments did not exceed 10^{6} rad while the measurement error of signals with amplitude modulation of 20% was less than 5 ∙ 10^{5} rad. The method could be used to solve problems of radio interferometry, acoustics, etc., where the unknown value us expressed in terms of the phase difference of quasiharmonic signals.
Analysis of dispersion characteristics of linear elements’ line parameters of UWB balanced printed cavity antennas of a travelling wave
# 04, April 2013 DOI: 10.7463/0413.0548171 The authors carried out an electrodynamic analysis of the line parameters’ dispersion characteristics of the segments of balanced striplineslot antennas of traveling waves with different configuration. A dispersion model of the twinstrip line was presented. Dispersion equations were obtained by reduction of the original system of integral equations relating the currents and the electric fields in the cross section of the transmission line to a homogeneous system of linear algebraic equations by means of the spectral Galerkin method. In order to find the components of the twodimensional Green tensor function the method of spectral immitances was used. Analysis of test line geometries was carried out.
Efficiency of spacetime processing in onboard radar stations
# 04, April 2013 DOI: 10.7463/0413.0547801 The authors consider several signal processing algorithms in an onboard radar system with a multichannel phased antenna array used for detection of small, lowspeed targets. These are: split space and time nonadaptive processing, spacetime adaptive processing and spacetime adaptive processing with prebeam forming in elevation plane. A simple method of result comparison for mentioned algorithms is described. The results of computer simulation of the output signalto(noise + interference) ratio are also presented. The particular results were obtained for a coherent impulse sequence with mean repetition frequencies.
Developing an algorithm for extracting navigation data from GNSS signals
# 12, December 2012 DOI: 10.7463/1212.0496837 The authors propose an algorithm for extracting navigation data from GNSS signals. Analysis of this algorithm was carried out with the use of mathematical simulation of a signal tracking system; data from navigation GLONASS (GNSS) space vehicles was used as input information. The authors provide curves displaying dependence of navigation message restoration quality on the signal to noise ratio (SNR) representing different methods of synchronization.
Comprehensive assessment of radio channels by information symbols of MIMOOFDM signals by means of multivariate Kalman filter
# 10, October 2012 DOI: 10.7463/1012.0465244 The authors propose an algorithm which estimates and corrects the MIMOOFDMchannel with frequencyselective fading in phase noise on the basis of the multidimensional digital Kalman filter. The channel model is constructed in the form of autoregressive function based on the Jakes model. White frequency noise is considered as a model of phase impact. Research results of the algorithm show its high efficiency in fast fading. The authors performed parametrical adaptation of the proposed algorithms and formulated approaches to assessment and correction of channel parameters with account of the features and structure of the data packet technology 802.16e /m, EUTRA release 9 (LTEAdvanced).
Structural and parametric synthesis of PLL frequency synthesizer
# 06, June 2012 DOI: 10.7463/0612.0423339 In this paper structural and parametric synthesis of PLL frequency synthesizers is proposed. The peculiarity of these devices includes existence of both external and internal noise in the system, which, in this case, does not allow to apply the classical method of structural synthesis based on the theory of optimal linear and nonlinear filtering. To solve the problem two steps were proposed. At the first stage optimal filters are synthesized separately for external and internal signal and noise sources. At the second stage structural synthesis is used, which includes properties of optimal filters obtained at the first stage.



