Sökning: "radio series"

Visar resultat 16 - 20 av 85 avhandlingar innehållade orden radio series.

  1. 16. GNSS Radio Occultation Inversion Methods and Reflection Observations in the Lower Troposphere

    Detta är en avhandling från Karlskrona : Blekinge Tekniska Högskola

    Författare :Thomas Sievert; Blekinge Tekniska Högskola.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GNSS Radio Occultation GNSS-RO ;

    Sammanfattning : GNSS Radio Occultation (GNSS-RO) is an opportunistic Earth sensing technique where GNSS signals passing through the atmosphere are received in low Earth orbit and processed to extract meteorological parameters. As signals are received along an orbit, the measured Doppler shift is transformed to a bending angle profile (commonly referred to as bending angle retrieval), which, in turn, is inverted to a refractivity profile. LÄS MER

  2. 17. Effects of Small-Scale Ionospheric Irregularities on GNSS Radio Occultation Signals Evaluations Using Multiple Phase Screen Simulator

    Detta är en avhandling från Karlskrona : Blekinge Tekniska Högskola

    Författare :Vinícius Ludwig Barbosa; Blekinge Tekniska Högskola.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GNSS Radio Occultation GNSS-RO ; Ionosphere; Scintillation;

    Sammanfattning : Radio Occultation (RO) is a remote sensing technique which uses Global Navigation Satellite System (GNSS) signals tracked by a Low-Earth Orbit (LEO) satellite to sound the earth's atmosphere both in low (troposphere, stratosphere) and high (ionosphere) altitudes. GNSS-RO provides global coverage and SI traceable measurements of atmospheric data with high-vertical resolution. LÄS MER

  3. 18. A Spectrum Decision Support System for Cognitive Radio Networks

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Yong Yao; Blekinge Tekniska Högskola.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Cognitive Radio Networks (CRNs) offer a promising capability of alleviating the problem of spectrum insufficiency. In CRNs, the licensed spectrum channels are either exclusively reserved for licensed users or temporarily used by unlicensed users. The requirement for unlicensed users is to not harmfully impair the licensed users transmissions. LÄS MER

  4. 19. High-resolution radio imaging of galaxy nuclei

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Eskil Varenius; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arp220; star formation; NGC4418; M82;

    Sammanfattning : Star formation and galaxy evolution are intimately linked together. A detailed understanding of the environment where stars form may help us explain the differences we see between galaxies today and at earlier times in the history of the Universe. LÄS MER

  5. 20. Towards multi-dimensional data representation and routing in Cognitive Radio Networks

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Alexandru Popescu; Blekinge Tekniska Högskola.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Today, an increasing amount of the functionality traditionally associated with stationary computers is moving into mobile devices. Furthermore, the number of applications that retrieve data via networks is increasing in view of the recent growth of video streaming to the browsers, further emphasizing the Quality of Experience (QoE) requirements of mobile users today. LÄS MER