Sökning: "Kaiser window"

Hittade 3 uppsatser innehållade orden Kaiser window.

  1. 1. Image Reconstruction Techniques using Kaiser Window in 2D CT Imaging

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE); Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Md Monowarul Islam; Muftadi Ullah Arpon; [2020]
    Nyckelord :CT Imaging; Parallel-Beam Projection; 2D FFT; Radon Transform; Filters; Window Functions; Kaiser window; Inverse Fourier Transform; FBP.;

    Sammanfattning : The traditional Computed Tomography (CT) is based on the Radon Transform and its inversion. The Radon transform uses parallel beam geometry and its inversion is based on the Fourier slice theorem. LÄS MER

  2. 2. Antenna elements matching : time-domain analysis

    Master-uppsats, Högskolan i Gävle/Akademin för teknik och miljöHögskolan i Gävle/Avdelningen för elektronik, matematik och naturvetenskap

    Författare :Cristina Condori-Arapa; [2010]
    Nyckelord :Time-domain analysis; Chirp z-transform; Kaiser-Bessel window; Filtering in time domain; Effects of time-domain analysis; Reverse engineering; De-embedding; TRL algorithm; uncertainties; sensitivity;

    Sammanfattning : Time domain analysis in vector network analyzers (VNAs) is a method to represent the frequency response, stated by the S-parameters, in time domain with apparent high resolution. Among other utilities time domain option from Agilent allows to measure microwave devices into a specific frequency range and down till DC as well with the two time domain mode: band-pass and low-pass mode. LÄS MER

  3. 3. Method for Acquisition and Reconstruction of non-Cartesian 3-D fMRI

    Magister-uppsats, Linköpings universitet/BildbehandlingLinköpings universitet/Tekniska högskolan

    Författare :Per Thyr; [2008]
    Nyckelord :MRI; PRESTO; PRESTO CAN; rotation; sequence development; image reconstruction; gridding; phase correction;

    Sammanfattning : The PRESTO sequence is a well-known 3-D fMRI imaging sequence. In this sequence the echo planar imaging technique is merged with the echo-shift technique. This combination results in a very fast image acquisition, which is required for fMRI examinations of neural activation in the human brain. LÄS MER