Sökning: "Synthetic instruments"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Synthetic instruments.

  1. 1. A Cross-Correlator for the Remote Sensing of Earth by Synthetic Aperture

    Författare :Erik J Ryman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cross-correlation; synthetic aperture; ASIC; VLSI.; earth observation;

    Sammanfattning : In light of our changing climate and the unpredictability of severe weather; a better understanding of our climate and increased weather forecast accuracy are in high demand. Humidity and temperature distribution profiles with high temporal resolution can significantly increase our knowledge of highly dynamic weather phenomena and improve weather forecasts. LÄS MER

  3. 2. Modelling Microwave Backscattering from Sea Ice for Synthetic-Aperture Radar Applications

    Författare :Anders Carlström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; synthetic-aperture radar; microwave; surface roughness; sea ice; backscattering models;

    Sammanfattning : The spaceborne synthetic-aperture radar (SAR) is considered one of the key instruments for monitoring the ice cover in polar oceans and regional seas. This thesis is concerned with applications of electromagnetic scattering theory and SAR system theory for modelling the response of different types of sea ice in SAR imagery. LÄS MER

  4. 3. An experimental approach on linear synthetic inertia

    Författare :Martin Fregelius; Urban Lundin; Katarina Yuen; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The interest in renewable energy has significantly increased in the last decades which has led to an increased amount of renewable energy sources in the grid. In the Nordic grid, the major contribution to renewable energy is hydro power and wind power and an increase in the amount of wind power is expected in the future. LÄS MER

  5. 4. Vector Measurements for Wireless Network Devices

    Författare :Efrain Zenteno; Peter Händel; Kristoffer Andersson; Magnus Isaksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vector measurements; radio frequency; synthetic instrumentation; bandwidth extension; Järnvägsgruppen - Elsystem; Järnvägsgruppen - Elsystem;

    Sammanfattning : Wireless networks are an iconic technology of today’s modern era, theyare present in our daily activities as can be exemplified by cellular communications,wi-fi, bluetooth, and others. Vector measurements play an importantrole in the design, simulation, and testing of wireless networks and are usedto characterize key devices operating in the radio interface, such as amplifiers,filters, and mixers. LÄS MER

  7. 5. Clinical and surgical aspects of treatment of degenerative and traumatic rotator cuff tears

    Författare :Soheila Zhaeentan; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Pain caused by rotator cuff pathology or tear is a major source of discomfort and dysfunction in the shoulder joint. The prevalence of rotator cuff tear increases with age and also as the workforce becomes older. LÄS MER