Russian
Scientific & Technical
Journal

S.N. Kirilov, S.N. Buzykanov
Methods of Multi-criterion Synthesis for Digital Signal Processing Algorithms

Methods of multi-criterion synthesis for digital signal processing algorithms are considered. As an example the efficiency of using the above methods is shown in digit filter and basis system synthesis contributing to a higher accuracy and fast acting of digital signal processing.
S.N. Kirilov, e-mail: nich@rsreu.ru
S.N. Buzykanov: e-mail: BuzykanovS@mail.ru

B.A. Atayants, V.V. Ezerski, V.S. Parshin
Algorithms for Digital Signal Processing of a Level Gage Based on Frequency Range Finder for Industrial Application

Basic principles for constructing precise FM level gages designed for precise measuring short and extremely short distances in industrial systems for automatic control of technological processes are considered. Working conditions are analyzed. Algorithms providing the appropriate level gage features required in various working conditions are proposed.
V.V. Ezerski, e-mail: ezerski@yandex.ru

V.V. Zolotarev, G.N. Ovechkin
Improving Reliability of Data Transmission and Storage by Using Multithreshold Methods for Decoding Noiseless Codes

Multithreshold algorithms for decoding selforthogonal noiseless codes are considered. The paper presents the latest achievements in the field of encoding and decoding binary codes used in various high-speed satellite channels. New capabilities of symbol (non-binary) decoders of the same type to be used in data storage systems are also discussed. The paper gives a brief comparative analysis for performance characteristics of multithreshold decoders and others, e.g. Viterbi decoder, turbo and low density parity check (LDPC) code decoders as well as some error-correcting methods for Reed-Solomon codes which appear to be much more sophisticated than majority algorithms.
V.V. Zolotarev, e-mail: zolotasd@yandex.ru
G.N. Ovechkin, e-mai: g_ovechkin@mail.ru

P.V.Babayan
Determining the Objects Observed Against Non-Uniform Background with Image Sensor Moving

The problem of determining objects observed by using video camera located on a moving carrier is solved. Using statistical characteristics of the error for estimating a background bias for calculating optimal threshold values is a peculiar feature of a proposed algorithm for determining the objects.
P.V.Babayan, e-mail: aitu@rsreu.ru

Yu.S. Bekhtin
Wavelet-Based Fusion of Noisy Multispectral Images Using Structure-Oriented Trees

A new method of noisy multispectral image fusion based on analyzing structure-(space-) oriented trees (SOT) of wavelet transformation is proposed. The resulting high quality image is formed by using synthesized SOTs obtained after comparing SOT wavelet coefficients for all images being fused. Simulating results prove the advantage of the proposed method compared to familiar approaches under PSNR and SSIM criteria.
Yu.S. Bekhtin, e-mail: yuri.bekhtin@yandex.ru

V.K. Klochko
Mathematical Methods of Forming 3D Object Images in Onboard Imaging Systems

Methods and an algorithm to form 3D images of terrestrial surface and objects in accordance with the observed data of onboard radar location and radar thermal location stations (RLS and RLT) are proposed.
V.K. Klochko, e-mail: KlochkoVK@mail.ru

V.V. Eremeev
Current Trends of Analyzing and Improving the Quality of Aero-Space Imagery for the Earth Surface

The results of the RSREU-based Scientific Research Institute for aerospace imagery processing achieved for the last years in the field of estimating and improving the quality of data for remote Earth probing are presented (RSREU – Ryazan State Radio-Engineering University).
V.V. Eremeev, e-mail: foton@rsreu.ru

D.I. Popov
Acceleration of Nonrecursive Rejector Filter Transients

Using a state variable method a rejector filter (RF) is synthesized and improved to accelerate transient process at clutter edge reception. Block diagram of RF being reconstructed in transient regime is proposed. Analyzing the efficiency of RF with a fixed structure compared to that of RF reconstructed in transient regimes proves the essential efficiency increase of the latter.

Yu.N. Parshin, A.V. Komissarov
MIMO Telecommunication System Capacity in Variable Spatial Radio Channel Structure with Simulated Multipath Propagation

MIMO telecommunication system capacity using simulated multipath propagation is analyzed. Spatial structure is optimized by a capacity maximum criterion. Spatial coding of the signal transmitted is carried out by a beamforming method. Signal power distribution in transmitting and receiving antennas is performed by a “water-filling” principle. MIMO communication system capacity with the account of mutual effect of receiving and transmitting antenna elements is estimated. Yu.N. Parshin, e-mail: parshin.y.n@rsreu.ru

N.A. Andreev, V.V. Vityazev, G.N. Kolod’ko
Adaptive Multirate Trajectory Signal Processing in Solving Radar Imaging Problems

Methods of designing a digital trajectory signal receiver and algorithms for trajectory signal processing based on multirate and adaptive filtering are considered. Trajectory signal model and block diagrams of a digital receiver in the models of groundmapping selecting the terrestrial moving objects are given. Application of multirate and adaptive filtering is proved to be an effective means of solving radar imaging problems.
V.V. Vityazev, e-mail: vityazev.v.v@rsreu.ru

V.V. Androsov, V.V. Vityazev, S.V. Vityazev, E.D. Shershnev
Algorithms of Autofocusing Radar Images in Dynamic Trajectory Instabilities

Algorithms of autofocusing radar images being synthesized in Doppler beam narrowing mode for helicopter radar stations, providing maximum potential azimuth resolution increase in dynamic trajectory instabilities are considered. Simulating the algorithms for aperture synthesizing using a “blind” autofocusing (by trajectory signal spectrogram) is given.
V.V. Vityazev, e-mail: vityazev.v.v@rsreu.ru

S.V. Kirilov, A.D. Tokar
Optimization of Digital Algorithm to Control Moving Object with Maneuvering Antiaircraft Guidance

Digital algorithm to control a moving object providing an intensively maneuvering antiaircraft guidance is analyzed. Homing the maneuvering air targets is proved to decrease speeding up the control object (CO) and missing the target by 20 to 30% and 5 to 10% respectively as compared to a traditional method of proportional guidance with increasing the calculation by 5 to 10%.
S.V. Kirilov, e-mail: nich@rsreu.ru
A.D. Tokar: e-mail arkadiitokar@mail.ru

M.B. Kagalenko
Accuracy of Harmonic Signal Frequency Estimation by the Method of Nonlinear Least Squares

Asymptotic expressions for bias and variance of estimating harmonic signal frequency with additive stationary Gaussian noise by the method of nonlinear least squares are obtained. Unlike previously published results the expressions presented in the paper are valid for frequency values within the whole measurement interval including both near-zero and close to Kotelnikov sampling frequency values. The estimation is in conformity with static simulation results.
M.B. Kagalenko, e-mail: michael.kagalenko@gmail.com

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