Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 59-78 of 514

  • Beamforming for radio astronomy 

    Van Tonder, Vereese (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: Beamforming is a technique used to combine signals from an array of antennas to effectively synthesize a single aperture and beam. In the Radio Astronomy community the technique is used to obtain a ...

  • Benefits to processor load for quadrature baseband versus radio frequency demodulation algorithms 

    Ndovi, Lusungu (Stellenbosch : Stellenbosch University, 2008-12)
    The continued advancement and improvement of software-defined radio technology has been a key factor in furthering research into the implementation of most signal processing algorithms at baseband. Traditionally, these ...

  • Bidirectional converter for a stirling energy system 

    Redecker, H. H. (Hans Henning) (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: This thesis discusses a 23 kW three-phase AC bus system that is utilized together with the “Stirling Energy System (SES) Integrated Solar Dish-Stirling Module” to function as a mini-grid for off-grid ...

  • Bird song recognition with hidden Markov models 

    Van der Merwe, Hugo Jacobus (Stellenbosch : Stellenbosch University, 2008-03)
    Automatic bird song recognition and transcription is a relatively new field. Reliable automatic recognition systems would be of great benefit to further research in ornithology and conservation, as well as commercially ...

  • Bore sight error analysis in seeker antennas : a fully functional GUI interfaced ray tracing solution 

    Barnard, Daniel David (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: Airborne seeker antennas are usually enclosed within a dielectric radome for protection against their harsh operational environment. However the presence of a radome can introduce serious degrading effects ...

  • A Bore-sight Motion Detection Algorithm for Satellite Attitude Control 

    Visagie, Lourens (Stellenbosch : University of Stellenbosch, 2007-12)
    During an imaging pass of a remote sensing satellite, the satellite’s attitude has to be controlled so that the imager bore-sight sweeps out equal distances over time and so that images with a square aspect ratio are ...

  • A broadband microwave limiting amplifier 

    Neethling, M. (Marthinus) (Stellenbosch : University of Stellenbosch, 2004-12)
    ENGLISH ABSTRACT: Limiting amplifiers are employed in electronic warfare (EW) systems requiring a high measure of amplitude control. These EW systems employ sensitive signal processing components that are unable to accept ...

  • Cable trays and EMC : modelling and measurement 

    Ebertsohn, Nolan Wade (Stellenbosch : Stellenbosch University, 2005-12)
    ENGLISH ABSTRACT: Common mode currents are a major source of interference in electrical and electronic systems. A universal solution to counteract common mode interference is to introduce an electromagnetic shield with ...

  • Calibration of UV-sensitive camera for corona detection 

    Du Toit, Nicolaas Serdyn (Stellenbosch : University of Stellenbosch, 2007-03)
    Electrical energy is continuously transported across the world by high voltage transmission lines. These transmission lines are however subject to losses beside the inherent resistive and dielectric losses. This additional ...

  • A CAN based distributed telemetry and telecommand network for a nanosatellite 

    Khumalo, Simphiwe (Stellenbosch : Stellenbosch University, 2008-03)
    A communications protocol is designed for real time control and data handling for a Nanosatellite application. The communication protocol is based on the Controller Area Network (CAN) technology. The protocol handles ...

  • Characterisation of L-band differential low noise amplifiers 

    Prinsloo, David Schalk Van Der Merwe (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: This thesis addresses the complications that are encountered when characterising the performance of differential microwave LNAs. The predominant sources of noise in electronic circuits are introduced and ...

  • Coaxial resonator filters 

    Maas, Susan (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: The purpose of this project is to develop a number of coaxial resonator lters. Firstly, the theoretical model of the lter is discussed, with a Tchebyscheff LC-ladder prototype lter used to derive a ...

  • Code generation and simulation of an automatic, flexible QC-LDPC hardware decoder 

    Von Leipzig, Mirko (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT: Iterative error correcting codes such as LDPC codes have become prominent in modern forward error correction systems. A particular subclass of LDPC codes known as quasicyclic LDPC codes has been ...

  • Comparative evaluation of the Mobile Protocol 6 Suite 

    Pieterse, Johan (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT: Mobile IPv6 is a proposed mobility standard for Next Generation Wireless Access Networks that allows mobile nodes, such as laptops, tablets, smart phones to stay reachable while moving around in an IPv6 ...

  • Comparative evaluation of video watermarking techniques in the uncompressed domain 

    Van Huyssteen, Rudolph Hendrik (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: Electronic watermarking is a method whereby information can be imperceptibly embedded into electronic media, while ideally being robust against common signal manipulations and intentional attacks to ...

  • A comparative study of cloud computing environments and the development of a framework for the automatic deployment of scaleable cloud based applications 

    Mlawanda, Joyce (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: Modern-day online applications are required to deal with an ever-increasing number of users without decreasing in performance. This implies that the applications should be scalable. Applications hosted ...

  • The comparison of AC and DC alternatives for sub-transmission networks 

    Engelbrecht, Frank (Stellenbosch : Stellenbosch University, 2001-12)
    ENGLISH ABSTRACT: Recent advances in semiconductor technology extended the economic power range for DC transmission to just a few MW. Network planners need tools to compare AC and DC alternatives in order to find the ...

  • A comparison of control systems for the flight transition of VTOL unmanned aerial vehicles 

    Kriel, Steven Cornelius (Stellenbosch : University of Stellenbosch, 2008-03)
    This thesis details the development of linear control systems that allow a vertical take-off and landing unmanned aerial vehicle to perform transitions between vertical and horizontal flight. Two mathematical models are ...

  • A comparison of Gaussian mixture variants with application to automatic phoneme recognition 

    Brand, Rinus (Stellenbosch : University of Stellenbosch, 2007-12)
    The diagonal covariance Gaussian Probability Density Function (PDF) has been a very popular choice as the base PDF for Automatic Speech Recognition (ASR) systems. The only choices thus far have been between the spherical, ...

  • Computational investigation of a crossed slot cavity-backed array antenna 

    Voigt, Dewald (Stellenbosch : University of Stellenbosch, 2006-03)
    This thesis investigates a computational model of an electronically steered antenna array. It focuses on a simple element comprising an S-shaped, crossed, cylindrical cavity-backed slot antenna. An unusual aspect of the ...