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Prony klasės metodų taikymo signalų įvertinimui tyrimas / Parametric signal estimation by Prony class methodsAuksutienė, Daiva 11 June 2004 (has links)
A possibility for parametric signal estimation by Prony class methods is investigated in this work. So-called exponential-sinusoidal models are considered. These models comprise damped exponentials, damped and undamped sinusoidals, and various their additive combinations. Two main methods – the classical Prony method and Prony method with prefiltering – are studied in this work. The formulas for estimation of parameters of undamped and damped sinusoidals by the classical Prony method are derived. The algorithm for calculation of the impulse response of the filter used in Prony method with prefiltering is given. Software for estimation of exponential-sinusoidal models by Prony class methods is developed (in the MATLAB environment). Numerical experiments are carried out using the software developed. The conclusions on possibilities of application of the classical Prony method and Prony method with prefiltering are stated on the basis of simulation results.
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Pixel Qualification Methods in Attributed Scattering Center ExtractionFarmer, Justin Tyler 25 August 2014 (has links)
No description available.
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The Generalized Operator Based Prony MethodStampfer, Kilian 17 January 2019 (has links)
No description available.
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Estimação fasorial utilizando técnica recursiva dos mínimos quadradosFerreira, Ronaldo Rocha January 2014 (has links)
Orientador: Prof. Dr. Fabiano Fragoso Costa / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia Elétrica, 2014. / Este trabalho propõe um algoritmo de estimaçãoo fasorial baseado na versão modificada
do algoritmo de mínimos quadrados recursivo. Este algoritmo é adequado
para proteção de sistemas de potência, uma vez que sua resposta é rapida e robusta
'a presença da componente dc de decaimento exponencial, que é uma interferência
comum em condi¸ções de falta atrasando a convergência da estimativa fasorial. Além
disso, esta dissertação também investiga o uso do chamado método de Prony, a fim
de auxiliar e acelerar a convergência da estimação fasorial do algoritmo dos mínimos
quadrados. O método de Prony determina o decaimento exponencial a ser extraído
do sinal analisado. As técnicas desenvolvidas nessa disserta¸c¿ao foram comparadas
com o tradicional estimador de Fourier de um ciclo atrav'es de simula¸c¿oes realizadas
em Matlab e de experimentos realizados com um processador de sinais e um
amplificador de sinais. Os resultados mostram melhorias da t'ecnica proposta em
comparação ao algoritmo de Fourier e incentivam futuras pesquisas relacionadas a
este assunto. / This work proposes a phasor estimation algorithm based on a modified recursive
least-squares. This algorithm is suitable for power systems protection once its
response quick and robust to the decaying dc component, which is a most usual interference
in fault conditions and delays the phasor estimation convergence. Furthermore,
this dissertation also investigates the usage of the so-called Prony¿s method in
order to aid and to speed up the least-squares phasor estimation convergence. This
method determines the exponential decaying to be extracted out of the analyzed
signal. The present developed techniques have been compared with the traditional
one-cycle Fourier estimation by simulation performed on Matlab and by experiments
accomplished with a digital signal processor and a signal amplifier. The results show
improvements of the proposed techniques over the Fourier algorithm and encourage
further research in this topic.
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Application of AAK theory for sparse approximationPototskaia, Vlada 16 October 2017 (has links)
No description available.
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Reconstruction of Structured Functions From Sparse Fourier DataWischerhoff, Marius 14 January 2015 (has links)
No description available.
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