Essays about: "antennas for satellite applications"

Showing result 1 - 5 of 11 essays containing the words antennas for satellite applications.

  1. 1. Machine Learning-based MIMO Indoor Positioning

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Qiyi Chen; [2023]
    Keywords : Technology and Engineering;

    Abstract : The most widely used positioning system is Global Navigation Satellite System (GNSS), which uses traditional positioning techniques and cannot achieve satisfactory positioning performance in indoor scenarios due to Non-Line-of-Sight (NLoS) transmission. Fingerprinting is a non-traditional positioning technique that is robust to NLoS transmission in indoor scenarios. READ MORE

  3. 2. Far-field pattern synthesis of transmitarray antennas using convex optimization techniques

    University essay from KTH/Tillämpad fysik

    Author : Marie Defives; [2022]
    Keywords : Applied physics; Transmitarray antennas; convex optimization; Tillämpad fysik; Transmitarray-antenner; konvex optimering;

    Abstract : Transmitarrays antennas (TAs) can be seen as the planar counterpart of optical lenses. They are composed of thin radiating elements (unit cells) which introduce different local phase shifts on an incident electromagnetic wave, emitted by a primary source, and re-radiate it. READ MORE

  4. 3. Design and Evaluation of V/UHF Satellite Communication Antennas for Naval Applications

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Hampus Bäckström; [2018]
    Keywords : Antenna design; Antenna simulations; QHA; Submarine communication; SatCom; MUOS; Legacy; Antenndesign; Antennsimulering; QHA; Ubatskommunikation; Satellitkommunikation; MUOS; Legacy;

    Abstract : In this master thesis, compact antenna design aimed towards naval applicationshave been designed, analyzed and evaluated. There is a recentinterest in the development of compact antennas to be used for smallersubmarine models, and with a smaller hull on a submarine, communicationand antenna systems must be adapted and minimized, which limitsantenna design. READ MORE

  5. 4. Inter-Satellite Link Antennas : Review and The Near Future

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Arttu Tiainen; [2017]
    Keywords : Satellite; ISL; Communications; Antenna;

    Abstract : The emerging trend in distributed spacecraft systems of using multiple spacecraft which share functions as opposed to independent spacecraft has given opportunities for missions previously infeasible. Inter-satellite link (ISL) communications provide a direct link within the space segment without need of an intermediate ground segment to relay the data. READ MORE

  6. 5. Restrictions in the far-field of antennas enclosed in bodies of revolution

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Clara Bäck; [2016]
    Keywords : Antenna pattern synthesis; body of revolution; far-field restrictions; genetic algorithm; Technology and Engineering;

    Abstract : Antennas can be found everywhere in our everyday life. One of the applications for them are space satellites, which can be used for communication, positioning and weather supervision. A satellite carries several components on its body, such as solar panels and cameras, therefore there is a volume restriction for the antenna to fit. READ MORE