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Statements

Subject Item
n2:RIV%2F00000493%3AG41__%2F10%3A%230000335%21RIV11-MO0-G41_____
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The problem of detection of narrowband sinusoidal signals buried in additive noise is addressed. Detection is formulated using continuous wavelet transform (CWT) with the custom designed complex cosine wavelet and estimating the presence and frequency of useful signals in the wavelet domain. An adaptive entropy based threshold detector is proposed to detect presence and time localization of useful signal in the transform domain. A simple and pragmatic method of threshold setting as the average of minimum and maximum entropy is proposed. Application example is focused on detection of useful signal in the harmonic radar system. Simulation results show that the proposed method also allows detection of signals with negative signal-to-noise ratio (SNR). Time-frequency characteristic of the CWT is compared with the short-time Fourier transform (STFT) for the specific mother wavelet. The problem of detection of narrowband sinusoidal signals buried in additive noise is addressed. Detection is formulated using continuous wavelet transform (CWT) with the custom designed complex cosine wavelet and estimating the presence and frequency of useful signals in the wavelet domain. An adaptive entropy based threshold detector is proposed to detect presence and time localization of useful signal in the transform domain. A simple and pragmatic method of threshold setting as the average of minimum and maximum entropy is proposed. Application example is focused on detection of useful signal in the harmonic radar system. Simulation results show that the proposed method also allows detection of signals with negative signal-to-noise ratio (SNR). Time-frequency characteristic of the CWT is compared with the short-time Fourier transform (STFT) for the specific mother wavelet.
dcterms:title
The Detection Performance of Complex Cosine CWT and Entropy Analysis for Narrowband Signals The Detection Performance of Complex Cosine CWT and Entropy Analysis for Narrowband Signals
skos:prefLabel
The Detection Performance of Complex Cosine CWT and Entropy Analysis for Narrowband Signals The Detection Performance of Complex Cosine CWT and Entropy Analysis for Narrowband Signals
skos:notation
RIV/00000493:G41__/10:#0000335!RIV11-MO0-G41_____
n4:aktivita
n14:P
n4:aktivity
P(OSVTUO2009007)
n4:dodaniDat
n18:2011
n4:domaciTvurceVysledku
n19:8876053 n19:5419972
n4:druhVysledku
n20:D
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
253658
n4:idVysledku
RIV/00000493:G41__/10:#0000335
n4:jazykVysledku
n16:eng
n4:klicovaSlova
Detection; Narrowband signal; Noise signal; Continuous Wavelet Transform (CWT); Entropy analysis; Harmonic radar; Nonlinear Junction Detection (NLJD)
n4:klicoveSlovo
n8:Detection n8:Harmonic%20radar n8:Noise%20signal n8:Narrowband%20signal n8:Nonlinear%20Junction%20Detection%20%28NLJD%29 n8:Continuous%20Wavelet%20Transform%20%28CWT%29 n8:Entropy%20analysis
n4:kontrolniKodProRIV
[58D3017D7F33]
n4:mistoKonaniAkce
Vilnius, Lithuania
n4:mistoVydani
Vilnius, Lithuania
n4:nazevZdroje
Proceedings from 11th International Radar Symposium IRS 2010 (Volume 2)
n4:obor
n10:KA
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:projekt
n11:OSVTUO2009007
n4:rokUplatneniVysledku
n18:2010
n4:tvurceVysledku
Poláček, Vladimír Pavlík, Radomír
n4:typAkce
n13:WRD
n4:zahajeniAkce
2010-06-16+02:00
s:numberOfPages
4
n7:hasPublisher
GEOZONDAS Ltd, Vilnius, Lithuania
n21:isbn
978-9955-690-18-4
n9:organizacniJednotka
G41