Sökning: "phase-retrieval algorithm"

Hittade 4 avhandlingar innehållade orden phase-retrieval algorithm.

  1. 1. Phase Retrieval Methods for Electromagnetic Source Modeling

    Författare :Markus Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source modeling; optimization; SAR; phase retrieval; dosimetry;

    Sammanfattning : Modeling of the field distributions from electromagnetic sources is of interest for various applications including electromagnetic compatibility investigations, near-field to far-field transformations, antenna diagnostics and electromagnetic dosimetry. In order to determine whether exposure safety guidelines, such as the EU directive 2004/40/EC, are complied with, source modeling methods are important. LÄS MER

  3. 2. Complex source modeling for electromagnetic dosimetry

    Författare :Markus Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimization; phase-retrieval; source modeling; dosimetry; SAR;

    Sammanfattning : Electromagnetic modeling of complex sources is useful in dosimetry applications as well as for near-field to far-field transformations and antennadiagnostics. In order to determine whether exposure safety guidelines, such as the EU directive 2004/40/EC, are complied with, it is important to be able tomodel the field distribution from electromagnetic sources. LÄS MER

  4. 3. Kinoforms

    Författare :Jörgen Bengtsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffractive optics; computer generated hologram; proximity effect compensation; millimeter wave kinoform; kinoform; beam shaping; parallel optical interconnects; laser machining; phase-retrieval algorithm; diffractive optical element;

    Sammanfattning : .... LÄS MER

  5. 4. Analytic and data-driven methods for 3D electron microscopy

    Författare :Gustav Zickert; Pär Kurlberg; Ozan Öktem; Timo Koski; Roy Lederman; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The central theme of this thesis is theoretical and algorithmic aspects of 3D electron microscopy (3D-EM). In particular, the thesis explores three parts of this theme. The first part concerns analysis of forward operators that, compared to those traditionally used, better account for the wave properties of the imaging electron. LÄS MER