Sökning: "Frequency estimation"

Visar resultat 1 - 5 av 293 avhandlingar innehållade orden Frequency estimation.

  1. 1. On Parameter Estimation Applications in Radio Astronomy and Power Networks

    Detta är en avhandling från Karlskrona : Blekinge Tekniska Högskola

    Författare :Jonas Lundbäck; Blekinge Tekniska Högskola.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parameter estimation; Antenna arrays; FMCW-radar; Polarization estimation; Fault locator;

    Sammanfattning : Signal processing is a common part of the modern society used to obtain high functionality in a vast number of applications. As the development of advanced electronics and powerful computers continue, the limit of the functionality in many systems is increased. LÄS MER

  2. 2. Exploiting Prior Information in Parametric Estimation Problems for Multi-Channel Signal Processing Applications

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Petter Wirfält; KTH.; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Array signal processing; covariance matrix; damped sinusoids; direction of arrival estimation; frequency estimation; Kronecker; NQR; NMR; parameter estimation; persymmetric; signal processing algorithms; structured covariance estimation; Toeplitz; Array; signalbehandling; kovariansmatris; dämpad sinus; riktningbestämning; frekvensskattning; Kronecker; NQR; NMR; parameterestimering; persymmetrisk; algoritm; strukturerad kovariansmatris; Toeplitz;

    Sammanfattning : This thesis addresses a number of problems all related to parameter estimation in sensor array processing. The unifying theme is that some of these parameters are known before the measurements are acquired. LÄS MER

  3. 3. Estimation and Classification of Non-Stationary Processes : Applications in Time-Frequency Analysis

    Detta är en avhandling från Centre for Mathematical Sciences, Lund University

    Författare :Johan Brynolfsson; Lunds universitet.; Lund University.; Lund University.; Lunds universitet.; Lund University.; [2019-05-17]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Time-Frequency Estimation; Parameter Estimation; Reassignment method; Non-Stationary Processes; Smooth spectral estimation; Neural Networks;

    Sammanfattning : This thesis deals with estimation and classification problems of non-stationary processes in a few special cases.In paper A and paper D we make strong assumptions about the observed signal, where a specific model is assumed and the parameters of the model are estimated. LÄS MER

  4. 4. Model Reduction and Parameter Estimation for Diffusion Systems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Bharath Bhikkaji; Uppsala universitet.; Uppsala universitet.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diffusion system; Partial differential equations PDEs ; Model reduction; PDE solvers; Finite difference approximation; Chebyshev polynomials; System identification; Parameter estimation; Recursive estimation; Frequency domain estimation; TECHNOLOGY Information technology Signal processing; TEKNIKVETENSKAP Informationsteknik Signalbehandling;

    Sammanfattning : Diffusion is a phenomenon in which particles move from regions of higher density to regions of lower density. Many physical systems, in fields as diverse as plant biology and finance, are known to involve diffusion phenomena. Typically, diffusion systems are modeled by partial differential equations (PDEs), which include certain parameters. LÄS MER

  5. 5. Time series modelling of high frequency stock transaction data

    Detta är en avhandling från Umeå : Nationalekonomi

    Författare :Shahiduzzaman Quoreshi; Umeå universitet.; [2006]
    Nyckelord :Economics; Count data; Intra-day; High frequency; Time series; Estimation; Long memory; Finance; Nationalekonomi; Econometrics; ekonometri;

    Sammanfattning : .... LÄS MER