Temat: smoothing filter - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On Employing a Savitzky-Golay Filtering Stage to Improve Performance of Spectrum Sensing in CR Applications Concerning VDSA Approach
Autorzy:: Angrisani, L.
Capriglione, D.
Cerro, G.
Ferrigno, L.
Miele, G.
Powiązania:: https://bibliotekanauki.pl/articles/220369.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cognitive radio
smoothing filter
VDSA
spectrum sensing
spectral measurements
Opis:: In this paper, a filtering stage based on employing a Savitzky-Golay (SG) filter is proposed to be used in the spectrum sensing phase of a Cognitive Radio (CR) communication paradigm for Vehicular Dynamic Spectrum Access (VDSA). It is used to smooth the acquired spectra, which constitute the input for a spectrum sensing algorithm. The sensing phase is necessary, since VDSA is based on an opportunistic approach to the spectral resource, and the opportunities are represented by the user-free spectrum zones, to be detected through the sensing phase. Each filter typology presents peculiarities in terms of its computational cost, de-noising ability and signal shape reconstruction. The SG filtering properties are compared with those of the linear Moving Average (MA) filter, widely used in the CR framework. Important improvements are proposed.
Źródło:: Metrology and Measurement Systems; 2016, 23, 2; 295-308
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Estimation of UAV Position with Use of Smoothing Algorithms
Autorzy:: Kaniewski, P.
Gil, R.
Konatowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/221380.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Unmanned Aerial Vehicle
Inertial Navigation System
Global Navigation Satellite System
Integrated Navigation System
Synthetic Aperture Radar
Kalman Filter
smoothing algorithm
Opis:: The paper presents methods of on-line and off-line estimation of UAV position on the basis of measurements from its integrated navigation system. The navigation system installed on board UAV contains an INS and a GNSS receiver. The UAV position, as well as its velocity and orientation are estimated with the use of smoothing algorithms. For off-line estimation, a fixed-interval smoothing algorithm has been applied. On-line estimation has been accomplished with the use of a fixed-lag smoothing algorithm. The paper includes chosen results of simulations demonstrating improvements of accuracy of UAV position estimation with the use of smoothing algorithms in comparison with the use of a Kalman filter.
Źródło:: Metrology and Measurement Systems; 2017, 24, 1; 127-142
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

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