Autor: Safi, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparative Study between Several Direction of Arrival Estimation Methods
Autorzy:: Khmou, Y.
Safi, S.
Frikel, M.
Powiązania:: https://bibliotekanauki.pl/articles/308017.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: array processing
Direction of Arrival
geolocalization
propagation
smart antenna
spectral analysis
Opis:: In this paper a comparative study, restricted to one-dimensional stationary case, between several Direction of Arrival (DOA) estimation algorithms of narrowband signals is presented. The informative signals are corrupted by an Additive White Gaussian Noise (AWGN), to show the performance of each method by applying directly the algorithms without pre-processing techniques such as forward-backward averaging or spatial smoothing.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 1; 41-48
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Focusing Operators and Tracking Moving Wideband Sources
Autorzy:: Frikel, M.
Safi, S.
Khmou, Y.
Powiązania:: https://bibliotekanauki.pl/articles/309477.pdf
Data publikacji:: 2016
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: DoA
localization
tracking
wideband signal
Opis:: In this paper, the localization of wideband source with an algorithm to track a moving source is investigated. To locate the wideband source, the estimation of two directions of arrival (DOA) of this source from two different arrays of sensors is used, and then, a recursive algorithm is applied to predict the moving source’s position. The DOA is estimated by coherent subspace methods, which use the focusing operators. Practical methods of the estimation of the coherent signal subspace are given and compared. Once the initial position is estimated, an algorithm of tracking the moving source is presented to predict its trajectory.
Źródło:: Journal of Telecommunications and Information Technology; 2016, 4; 53-59
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Lorentzian Operator for Angular Source Localization with Large Array
Autorzy:: Khmou, Y.
Safi, S.
Frikel, M.
Powiązania:: https://bibliotekanauki.pl/articles/308330.pdf
Data publikacji:: 2015
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: array processing
Direction of Arrival
narrowband
operator
Opis:: Source localization problem consists of an ensemble of techniques that are used to obtain spatial information of present radiation in given medium of propagation, with a constraint of the antenna geometry and the characteristics of radiating sources. This condition gives multitude of cases to study, hence several methods were proposed in the literature. In this paper, a new algorithm for estimating the Direction of Arrival (DoA) of narrowband and far eld punctual sources is introduced. By exploiting the spectrum of covariance matrix of received data, the Lorentzian function on spectral matrix to lter the eigenvalues is applied. This ltering process eliminates the eigenvalues belonging to signal subspace. Parameters of Lorentz function are adjusted using rst and second statistics of eigenvalues. The algorithm requires the knowledge of minimum eigenvalue and is performing when the dimension of antenna is relatively large which is conrmed by several Monte Carlo simulations.
Źródło:: Journal of Telecommunications and Information Technology; 2015, 4; 98-105
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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