Sökning: "multibeam"

Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet multibeam.

  1. 1. Polarization diversity and array signal processing in base station antennas

    Författare :Björn Lindmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; signal correlation; mobile communication; rayleigh fading; wireless communication; multibeam; dual band; dual polarized; multual coupling; infinite arrays; aperture coupled patch; antenna arrays;

    Sammanfattning : .... LÄS MER

  3. 2. Sonar for environmental monitoring of marine renewable energy technologies

    Författare :Francisco Francisco; Jan Sundberg; Mats Leijon; Emilia Lalander; Uppsala universitet; []
    Nyckelord :Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Human exploration of the hydrosphere is ever increasing as conventional industries grow and new industries emerge. A new emerging and fast-growing industry is the marine renewable energy. LÄS MER

  4. 3. Transmission Optimization for High Throughput Satellite Systems

    Författare :Ahmad Gharanjik; Mats Bengtsson; Björn OTTERSTEN; Wing-Kin (Ken) Ma; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Demands on broadband data service are increasing dramatically each year. Following terrestrial trends, satellite communication systems have moved from the traditional TV broadcasting to provide interactive broadband services even to urban users. LÄS MER

  5. 4. Adapting sonar systems for monitoring ocean energy technologies

    Författare :Francisco Francisco; Jan Sundberg; Mats Leijon; William Megill; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ocean energy; sonar systems; monitoring technologies; marine environment; wave power; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : The global energy sector is under profound reforms aiming towards renewable energy sources, clean technologies and expansion of smart grids, all with the additional aim of providing affordable and dependable electricity for everyone. A reduction of carbon dioxide emissions is a priority on the global agenda, and to achieve that, cleaner energy technologies has to be more integrated into the energy mix. LÄS MER

  7. 5. Data-driven Approaches to Uncertainty Modelling for SLAM in the Open Sea

    Författare :Ignacio Torroba; John Folkesson; Patric Jensfelt; John Leonard; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datalogi; Computer Science;

    Sammanfattning : Autonomous underwater vehicles (AUVs) equipped with multibeam echo-sounders have become indispensable tools for bathymetric mapping due to their ability to reach seabed regions inaccessible to surface vessels. However, the closer proximity to the survey area comes at the expense of a growing error in the AUV global pose estimate due to the lack of prior maps or a geo-referencing system underwater, such as GPS. LÄS MER