Sökning: "Reflection calibration"

Visar resultat 6 - 10 av 13 uppsatser innehållade orden Reflection calibration.

  1. 6. The measurement of antenna VSWR by means of a Vector Network Analyzer

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

    Författare :LIUJING YANG; [2020]
    Nyckelord :Vector Network Analyzer VNA ; Open kit; Short kit; Load kit; VSWR; 𝑆11; Smith chart; reflection coefficient;

    Sammanfattning : The VSWR is an important entity when assessing the properties of an antenna. This report presents measurements of the VSWR, related to antennas, by means of a Vector Network Analyzer. The open/short/load calibration method is used as a preparation before the actual measurement in order to obtain accurate results. LÄS MER

  3. 7. Connecting casting simulations with strength analysis

    Master-uppsats, KTH/Hållfasthetslära (Avd.)

    Författare :Joel Bergstedt; [2017]
    Nyckelord :;

    Sammanfattning : The finite element method and casting simulations have reached higher popularity and accuracy partly due to increase in computer power over the last couple of years. The increase in computer power has led to better simulations and hence a better reflection of reality. LÄS MER

  4. 8. Near Infrared Spectroscopy : An Introductory Study On Measurement Techniques And Tools For Analysing Moisture Content In Pulp And Paper Media

    Master-uppsats, Avdelningen för kemiteknik

    Författare :Niclas Dahlman; [2012]
    Nyckelord :NIR; spectroscopy; MVA; PLS; MSC;

    Sammanfattning : The growing technique of near infrared spectroscopy is used to build fundamental knowledge of how the method might be applied for moisture determination in pulp and paper media. Filter paper was used to investigate the angle and distance dependence, otherwise obscured by the uneven surface of pulp or dry fibers. LÄS MER

  5. 9. Underwater 3D Surface Scanning using Structured Light

    Uppsats för yrkesexamina på avancerad nivå, Centrum för bildanalys

    Författare :Nils Törnblom; [2010]
    Nyckelord :3D scanner; structured light; point cloud; underwater; nuclear reactor; image analysis; nondestructive testing; NDE; nondestructive examination; NDE;

    Sammanfattning : In this thesis project, an underwater 3D scanner based on structured light has been constructed and developed. Two other scanners, based on stereoscopy and a line-swept laser, were also tested. The target application is to examine objects inside the water filled reactor vessel of nuclear power plants. LÄS MER

  7. 10. Eye Tracking with Eye Glasses

    Uppsats för yrkesexamina på grundnivå, Institutionen för fysik

    Författare :Joakim Dahlberg; [2010]
    Nyckelord :eye tracking; eyeglasses;

    Sammanfattning : This study is concerned with the negative effects of wearing corrective lenses while using eye trackers, and the correction of those negative effects. The eye tracker technology studied is the video based real-time Pupil Center and Corneal Reflection method. LÄS MER