Browsing by Issue Date
Now showing items 1-20 of 23
-
Wide band, low-noise amplifiers for the mid-range SKA
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: This thesis presents the design, construction and measurement of two wide-band LNA’s for the SKA-Mid range (350-1200 MHz). The first wide-band LNA involves the investigation of classic low noise amplifier ... -
Towards a global SQUID network through optimal monitoring station design
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The Superconducting Quantum Interference Device (SQUID) is one of the most sensitive magnetic field sensors in the world. These instruments can only be used optimally for geomagnetic research if placed ... -
Smart transformer communication and application in rural microgrid settings
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The Smart Grid is an initiative to make the existing utility grid more effective and efficient by making utility infrastructure smarter. The initiative affects all areas of the utility grid and all utility ... -
Robust sampling-based conflict resolution for commercial aircraft in airport environments
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: This thesis presents a robust, sampling-based path planning algorithm for commercial airliners that simultaneously performs collision avoidance both with intruder aircraft and terrain. The existing ... -
Recovery based error estimation for the Method of Moments
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The Method of Moments (MoM) is routinely used for the numerical solution of electromagnetic surface integral equations. Solution errors are inherent to any numerical computational method, and error ... -
Probabilistic conflict detection for commercial aircraft near airports
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Increasing air traffic and urbanisation has led to a cluttered airspace, particularly near airports, where both complex terrain and multiple moving obstacles are frequent. Accurately and efficiently ... -
Occupancy grid mapping using stereo vision
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: This thesis investigates the use of stereo vision sensors for dense autonomous mapping. It characterises and analyses the errors made during the stereo matching process so measurements can be ... -
Image reconstruction in radio astronomy with non-coplanar synthesis arrays
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Traditional radio astronomy imaging techniques assume that the interferometric array is coplanar, with a small field of view, and that the two-dimensional Fourier relationship between brightness and ... -
Identification of driving manoeuvres using smartphone-based GPS and inertial forces measurement
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Road accidents are a growing concern for governments and is rising to become one of the leading causes of death in developing countries. Aggressive driving is one of the major causes of road accidents, ... -
Development of a converter-fed reluctance synchronous generator wind turbine controller
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The growing contribution of wind energy to utility grids has sparked interest in small-scale wind turbines and thus a growing global cumulative installed capacity. Small-scale wind turbines find use in ... -
Detection of black-backed jackal in still images
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: In South Africa, black-back jackal (BBJ) predation of sheep causes heavy losses to sheep farmers. Different control measures such as shooting, gin-traps and poisoning have been used to control the jackal ... -
The design, implementation of a moving platform landing algorithm for an unmanned autonomous helicopter
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: With a view to future ship deck landings, a moving platform landing algorithm for an unmanned autonomous helicopter was successfully designed and a number of systems were developed in order to implement ... -
Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The design optimisation of a linear oscillatory electric generator for application in freepiston Stirling engines is described in this thesis. A basic overview of free-piston Stirling engine technology ... -
Design of a receiver system for use in radio astronomy
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Please refer to full text for abstract. -
Design considerations for wildlife monitoring networks
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Studying wild animals in nature is a complex and tedious task for biologists and ecologists. The rugged terrain in which the animals live and hide makes it for researchers difficult to follow and observe ... -
Design and test implementation of a global interconnected SQUID geomagnetometer network
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: In 2012, a three-axis HTS-SQUID magnetometer project for geomagnetic measurements has been started at SANSA Space Science in Hermanus, South Africa. The goal of this project was to replicate a three-axis ... -
The design and simulation analysis of an attitude determination and control system for a small earth observation satellite
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: The ability of satellites to actively control their attitude has changed the way we live. Navigation systems, satellite television, and weather forecasting, for example, all rely on satellites which are ... -
Design and performance evaluation of an outer stator magnetically geared permanent magnet machine
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Please refer to full text for abstract. -
Design and fabrication of a SAW device for gas detection
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Please refer to full text for abstract. -
Comparative evaluation of the Mobile Protocol 6 Suite
(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 ...
