ABSTRACT A localization technique for stochastic EMI sources based on time domain measurements of... more ABSTRACT A localization technique for stochastic EMI sources based on time domain measurements of EM near-field tangential components is presented. The autocorrelation and cross-correlation functions obtained by using the two-point planar scanning system are used for the characterization of stochastic field distribution. The main limitations for scanning parameters are discussed. The case study for a frequency and spatial localizations of equivalent point sources is presented based on the modeling and measurement results.
The wideband coherent pulse radar provides high resolution image of the target. A model of this i... more The wideband coherent pulse radar provides high resolution image of the target. A model of this image is composed of the complex envelope superposition of signals diffracted by the point scatterers. The values of complex envelope are distributed over the radar image coordinate plane in accordance with the point scatterer's positions and their reflection coefficients. The radar image model is
IEEE MTT-S International Microwave Symposium Digest, 2005., 2000
The network-oriented ultra wideband transfer function representation of complex three-dimensional... more The network-oriented ultra wideband transfer function representation of complex three-dimensional electromagnetic structures is investigated. The transfer function consists of two parts: entire function and rational or pole function. System identification is carried out by the matrix pencil method (MPM) and a new criterion for the choice of the model order and the late-time border of the impulse response is presented.
Electrorheological Fluids and Magnetorheological Suspensions, 2002
Theoretical analysis and experimental research of the film flowing of magnetorheologic fluids whe... more Theoretical analysis and experimental research of the film flowing of magnetorheologic fluids when infinitive solid plate is retrieving from the former mediums were carried out. We have got dependencies of fluids mass losses m vs: velocity of moving plate V; magnitude of magnetic intensity, its gradient and angle φ between direction of intensity lines and normal vector to plane of plate. It is shown that theoretical and experimental m(φ) is anisotropy one and may change its magnitude more than 10 times. Real behavior and extreme characteristics of m(φ) depends on rhelogiacal parameters of MRS and its magnetization. Obtained experimental data of dependence m(V) are in qualitative and quantitative agreement with the modernized theory.
ABSTRACT The paper discusses the approaches used in the algorithm design of radar image processin... more ABSTRACT The paper discusses the approaches used in the algorithm design of radar image processing. They are based on parametric and non-parametric spectral analysis and compared to each other using well-known example of simulated data for the inverse synthetic aperture radar application. The goal of the processing is meeting two requirements which are reducing smeared Doppler shifts and improving image resolution. The proposed parametric identification method allows estimating signal model parameters for the short dwell time and extrapolating radar data outside this time. This radar image performance satisfies the requirements as well as joint time-frequency transform.
2013 International Symposium on Electromagnetic Compatibility, 2013
ABSTRACT Localization algorithm for stochastic EMI sources based on time domain planar near-field... more ABSTRACT Localization algorithm for stochastic EMI sources based on time domain planar near-field scanning of tangential electromagnetic field components emitted by a complex radiated structure is presented. The main theory aspects of the field reconstruction in the object plane as well as the main limitations for scanning parameters are also discussed for the proposed localization procedure. The autocorrelation and cross-correlation functions obtained by using the two-point planar scanning system are used for the characterization of stochastic field distribution. An example of point sources localization both in frequency and spatial domain is presented based on the modeling and measurement results.
2013 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2013
ABSTRACT This paper describes the network oriented modeling procedure for multiport microwave str... more ABSTRACT This paper describes the network oriented modeling procedure for multiport microwave structures. The various approaches to the equivalent network synthesis of multiport microwave structure are discussed. For the estimation of the system's poles and zeros positions, the matrix system identification procedure in conjunction with the model order selection algorithm are introduced.
The optimization of electromagnetic structures demands for a fast and efficient field solver in c... more The optimization of electromagnetic structures demands for a fast and efficient field solver in combination with a flexible and stable optimization method. In this work we present the time domain based transmission line matrix (TLM) method in conjunction with the genetic algorithm (GA) for the design optimization. The proposed technique is advantageous compared to conventional frequency domain methods when several
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015
We have extended the method for modeling the stochastic EM near-field which has already been desc... more We have extended the method for modeling the stochastic EM near-field which has already been described in [5, 13] for stationary stochastic fields to the case of cyclostationary fields. Areas of application are the modeling of the electromagnetic interference radiated by digital circuitry inside the system and also into the environment, where the period of the cyclostationary EMI is given by the clock frequency of the digital circuits.
ABSTRACT A localization technique for stochastic EMI sources based on time domain measurements of... more ABSTRACT A localization technique for stochastic EMI sources based on time domain measurements of EM near-field tangential components is presented. The autocorrelation and cross-correlation functions obtained by using the two-point planar scanning system are used for the characterization of stochastic field distribution. The main limitations for scanning parameters are discussed. The case study for a frequency and spatial localizations of equivalent point sources is presented based on the modeling and measurement results.
The wideband coherent pulse radar provides high resolution image of the target. A model of this i... more The wideband coherent pulse radar provides high resolution image of the target. A model of this image is composed of the complex envelope superposition of signals diffracted by the point scatterers. The values of complex envelope are distributed over the radar image coordinate plane in accordance with the point scatterer's positions and their reflection coefficients. The radar image model is
IEEE MTT-S International Microwave Symposium Digest, 2005., 2000
The network-oriented ultra wideband transfer function representation of complex three-dimensional... more The network-oriented ultra wideband transfer function representation of complex three-dimensional electromagnetic structures is investigated. The transfer function consists of two parts: entire function and rational or pole function. System identification is carried out by the matrix pencil method (MPM) and a new criterion for the choice of the model order and the late-time border of the impulse response is presented.
Electrorheological Fluids and Magnetorheological Suspensions, 2002
Theoretical analysis and experimental research of the film flowing of magnetorheologic fluids whe... more Theoretical analysis and experimental research of the film flowing of magnetorheologic fluids when infinitive solid plate is retrieving from the former mediums were carried out. We have got dependencies of fluids mass losses m vs: velocity of moving plate V; magnitude of magnetic intensity, its gradient and angle φ between direction of intensity lines and normal vector to plane of plate. It is shown that theoretical and experimental m(φ) is anisotropy one and may change its magnitude more than 10 times. Real behavior and extreme characteristics of m(φ) depends on rhelogiacal parameters of MRS and its magnetization. Obtained experimental data of dependence m(V) are in qualitative and quantitative agreement with the modernized theory.
ABSTRACT The paper discusses the approaches used in the algorithm design of radar image processin... more ABSTRACT The paper discusses the approaches used in the algorithm design of radar image processing. They are based on parametric and non-parametric spectral analysis and compared to each other using well-known example of simulated data for the inverse synthetic aperture radar application. The goal of the processing is meeting two requirements which are reducing smeared Doppler shifts and improving image resolution. The proposed parametric identification method allows estimating signal model parameters for the short dwell time and extrapolating radar data outside this time. This radar image performance satisfies the requirements as well as joint time-frequency transform.
2013 International Symposium on Electromagnetic Compatibility, 2013
ABSTRACT Localization algorithm for stochastic EMI sources based on time domain planar near-field... more ABSTRACT Localization algorithm for stochastic EMI sources based on time domain planar near-field scanning of tangential electromagnetic field components emitted by a complex radiated structure is presented. The main theory aspects of the field reconstruction in the object plane as well as the main limitations for scanning parameters are also discussed for the proposed localization procedure. The autocorrelation and cross-correlation functions obtained by using the two-point planar scanning system are used for the characterization of stochastic field distribution. An example of point sources localization both in frequency and spatial domain is presented based on the modeling and measurement results.
2013 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2013
ABSTRACT This paper describes the network oriented modeling procedure for multiport microwave str... more ABSTRACT This paper describes the network oriented modeling procedure for multiport microwave structures. The various approaches to the equivalent network synthesis of multiport microwave structure are discussed. For the estimation of the system's poles and zeros positions, the matrix system identification procedure in conjunction with the model order selection algorithm are introduced.
The optimization of electromagnetic structures demands for a fast and efficient field solver in c... more The optimization of electromagnetic structures demands for a fast and efficient field solver in combination with a flexible and stable optimization method. In this work we present the time domain based transmission line matrix (TLM) method in conjunction with the genetic algorithm (GA) for the design optimization. The proposed technique is advantageous compared to conventional frequency domain methods when several
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015
We have extended the method for modeling the stochastic EM near-field which has already been desc... more We have extended the method for modeling the stochastic EM near-field which has already been described in [5, 13] for stationary stochastic fields to the case of cyclostationary fields. Areas of application are the modeling of the electromagnetic interference radiated by digital circuitry inside the system and also into the environment, where the period of the cyclostationary EMI is given by the clock frequency of the digital circuits.
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Papers by Andrey Baev