document

Matrix-Pencil Approach-Based Interference Mitigation for FMCW Radar Systems

Wang, J. (author), Ding, M. (author), Yarovoy, Alexander (author)

A novel matrix-pencil (MP)-based interference mitigation approach for frequency-modulated continuous-wave (FMCW) radars is proposed in this article. The interference-contaminated segment of the beat signal is first cut out, and then, the signal samples in the cutout region are reconstructed by modeling the beat signal as a sum of complex...

journal article 2021

document

Sparsity-Based Optimization of the Sensors Positions in Radar Networks with Separated Transmit and Receive Nodes

Ivashko, I.M. (author), Krasnov, O.A. (author), Yarovoy, A.G. (author)

A sparsity-based approach for the joint optimization of the transmit and the receive nodes positions in the radar network with widely distributed antennas is proposed in this paper. The optimization problem is formulated as minimization of the number of radars that meet fixed target localization requirements over the surveillance area. We...

journal article 2016

document

Exploitation of homogeneous isotropic turbulence models for optimization of turbulence remote sensing

Oude Nijhuis, A.C.P. (author), Krasnov, O.K. (author), Unal, C.M.H. (author), Russchenberg, H.W.J. (author), Yarovoy, A. (author)

Homogeneous isotropic turbulence (HIT) models are compared, with respect to optimization of turbulence remote sensing. HIT models have different applications such as load calculation for wind turbines (Mann, 1998) or droplet track modelling (Pinsky and Khain, 2006). Details of vortices seem of less relevance for modelling `realistic measurements...

conference paper 2015

document

A new model for retrieving information about turbulence intensity from radar signal

Yanovsky, F.J. (author), Turenko, D.M. (author), Oude Nijhuis, A.C.P. (author), Krasnov, O.A. (author), Yarovoy, A. (author)

This paper presents mathematical models that are necessary to describe the relationship between Doppler spectrum width of the signal reflected from precipitation and eddy dissipation rate of turbulence kinetic energy. The feature of the models is taking into account the contribution of drop fall velocity variance, which is analyzed in detail,...

conference paper 2015

document

Radar micro-Doppler of wind turbines: Simulation and analysis using rotating linear wire structures

Krasnov, O.A. (author), Yarovoy, A. (author)

A simple electromagnetic model of wind-turbine's main structural elements as the linear wired structures is developed to simulate the temporal patterns of observed radar return Doppler spectra (micro-Doppler). Using the model, the micro-Doppler for different combinations of the turbines rotation frequency, radar pulse repetition frequency, and...

journal article 2015

document

Impact of a half-space interface on the wireless link between tiny sensor nodes

Penkin, D. (author), Janssen, G. (author), Yarovoy, A. (author)

The power budget of a wireless link between two electrically small sensor nodes located close to an interface between two media is studied. The model includes both the propagation channel losses and input impedance of the radio frequency antennas. It is shown that a highly inductive half-space significantly enhances the received power due to the...

journal article 2014

document

Optimization of turbulence measurements for radar, lidar and sonic anemometers

Oude Nijhuis, A.C.P. (author), Unal, C.M.H. (author), Krasnov, O.A. (author), Russchenberg, H.W.J. (author), Yarovoy, A. (author)

lecture notes 2014

document

Simulation of atmospheric turbulence: Fractal turbulence (poster)

Oude Nijhuis, A.C.P. (author), Unal, C.M.H. (author), Krasnov, O.A. (author), Russchenberg, H.W.J. (author), Yarovoy, A. (author)

journal article 2014

document

Simulation of atmospheric turbulence measurements: Fractal turbulence (poster)

Oude Nijhuis, A.C.P. (author), Krasnov, O.A. (author), Unal, C.M.H. (author), Russchenberg, H.W.J. (author), Yarovoy, A. (author)

A new trend is to observe atmospheric turbulence fields by using scanning Doppler radars and/or lidars. See e.g. Chan (2011) for the retrieval of eddy dissipation rate (EDR) maps at the Hongkong International Airport.

conference paper 2014

document

Source positioning in a large-scale tiny-sensor network of arbitrary topology

Penkin, D. (author), Janssen, G.J.M. (author), Yarovoy, A. (author)

To effectively localise a source node in a dense wireless tiny-sensor network with an arbitrary 2D/3D node distribution, a novel approach suitable to describe the hop progress of source-to-sink path in such a system is proposed. In this approach, the network topology is described as a regular lattice and relates the statistical parameters of the...

journal article 2014

document

Self-similarity matrix based slow-time feature extraction for human target in high-resolution radar

He, Y. (author), Aubry, P. (author), Le Chevalier, F. (author), Yarovoy, A. (author)

A new approach is proposed to extract the slow-time feature of human motion in high-resolution radars. The approach is based on the self-similarity matrix (SSM) of the radar signals. The Mutual Information is used as a measure of similarity. The SSMs of different radar signals (high-resolution range profile, micro-Doppler, and range-Doppler...

journal article 2014

document

Human motion classification using a particle filter approach: Multiple model particle filtering applied to the micro-Doppler spectrum

Groot, S. (author), Harmanny, R. (author), Driessen, H. (author), Yarovoy, A. (author)

In this article, a novel motion model-based particle filter implementation is proposed to classify human motion and to estimate key state variables, such as motion type, i.e. running or walking, and the subject’s height. Micro-Doppler spectrum is used as the observable information. The system and measurement models of human movements are built...

journal article 2013

document

Multi-channel reconfigurable front-end architecture for waveform-agile radar

Calabrese, G. (author), Pagli, L. (author), Krasnov, O.A. (author), Yarovoy, A.G. (author)

This paper presents the design of a multi-channel reconfigurable front-end architecture for a waveform-agile radar. At first the purpose of the design is explained following the status of research on software-defined radar at MTSR. A description of the proposed system architecture is given with details on sub-systems implementation. Then some...

journal article 2013

document

3D imaging by fast deconvolution algorithm in short-range UWB radar for concealed weapon detection

Savelyev, T. (author), Yarovoy, A. (author)

A fast imaging algorithm for real-time use in short-range (ultra-wideband) radar with synthetic or real-array aperture is proposed. The reflected field is presented here as a convolution of the target reflectivity and point spread function (PSF) of the imaging system. To obtain a focused 3D image, the proposed algorithm deconvolves the PSF out...

journal article 2013

document

Circuital characteristics and radiation properties of an UWB electric-magnetic planar antenna for Ku-band applications

Haider, S.N. (author), Caratelli, D. (author), Yarovoy, A.G. (author)

A planar, directive antenna with large fractional bandwidth is introduced in this paper. A detailed discussion on the proposed antenna topology and its architecture is reported. The proposed element is a combination of a patch and a loop radiator. A proper combination of the electric field radiator (patch) with a magnetic field radiator (loop...

journal article 2013

document

Recent developments in reconfigurable and multiband antenna technology

Haider, N. (author), Caratelli, D. (author), Yarovoy, A.G. (author)

A comparative analysis of various reconfigurable andmultiband antenna concepts is presented. In order to satisfy the requirements for the advanced systems used in modern wireless and radar applications, different multiband and reconfigurable antennas have been proposed and investigated in the past years. In this paper, these design concepts have...

journal article 2013

document

Full-wave modelling of ground-penetrating radars: Antenna mutual coupling phenomena and sub-surface scattering processes

Caratelli, D. (author), Yarovoy, A. (author)

Ground-penetrating radar (GPR) technology finds applications in many areas such as geophysical prospecting, archaeology, civil engineering, environmental engineering, and defence applications as a non-invasive sensing tool [3], [6], [18]. One key component in any GPR system is the receiver/transmitter antenna. Desirable features for GPR antennas...

book chapter 2011

document

Performance study of cavity-backed dual-band radiators

Amaldoss, S.E. (author), Yarovoy, A. (author)

The effectiveness of a cavity for dual-band patch radiator with a frequency ratio of 1.65:1 is analysed. The use of cavities can help in maintaining impedance matching, reducing the levels of mutual coupling between the elements as well as in containing the surface waves, aspects vital to array performance. Results demonstrate that with the use...

conference paper 2011

document

A novel LTCC differentially Fed UWB antenna for the 60 GHz band

Yang, B. (author), Yarovoy, A.G. (author), Valavan, A.S.E. (author), Buisman, K. (author), Shoykhetbrod, O. (author)

In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed...

journal article 2011

document

Conformal antenna array for ultra-wideband direction-of-arrival estimation

Liberal, I. (author), Caratelli, D. (author), Yarovoy, A. (author)

The design and full-wave analysis of an antenna system for ultra-wideband radio direction finding applications is presented. The elliptical dipole antenna is selected as antenna element due to its robust circuital and radiation properties. The influence of the conformal deformation on the antenna performance has been studied in details. A...

journal article 2011