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Attitude sensor and actuator interfacing for micro-satellites
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: The purpose of this thesis was to design and test the interfaces of sensors and actuators. In the
complete Attitude Determination and Control System CADCS) the Interface Control Processor
(ICP) must ...
Investigation of a high-speed serial bus between satellite subsystems
(Stellenbosch : Stellenbosch University, 2003-04)
ENGLISH ABSTRACT: The aim of this thesis is to investigate the implementation of a high-speed serial bus based
on the IEEE Std 1394-1995 specification for use in a microsatellite.
Earth observation microsatellites carry ...
Feasibility of using an ARM processor in a micro satellite on-board computer
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: After SUNSAT was launched in 1999 and the possibility of developing another micro satellite
emerged, areas of possible improvement were identified. Among the suggestions that emerged
was the idea of ...
The design of a communication protocol for a distributed ADCS for SUNSAT 2
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: One of the main subsystems of SUNSAT is the Attitude Determination and
Control System (ADCS), responsible for the orientation and positioning of the
satellite. Due to the integrated architecture of the ...
Feasibility of the PowerPc 603ETM for a LEO satellite on-board computer
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: For space designs, just as for terrestrial applications, the appetite for more computing
power is virtually insatiable. Further, like portable applications, space use implies severe
power constraints. ...
Strategies for the control of a satellite with thruster misalignment
(Stellenbosch : University of Stellenbosch, 2006-03)
This project investigates two problems related to satellites that contain cold gas thrusters and reaction wheels. The first problem concerns the estimation of the thruster force response to a pulse command. An optimal data ...
Control moment gyro actuator for small satellite applications
(Stellenbosch : University of Stellenbosch, 2005-03)
The aim of the thesis is to design a Control Moment Gyro (CMG) actuator which can be
used in small satellite applications. The hardware and software of the CMG has to be
designed according to specifications given. A ...
An LDPC error control strategy for low earth orbit satellite communication link applications
(Stellenbosch : University of Stellenbosch, 2009-12)
ENGLISH ABSTRACT: Low earth orbit (LEO) satellite communication presents a unique environment
which inherently di ers from most other communication channels.
Due to the varying orbital patterns of LEO satellites the link ...
Java implementation of AX.25 link-layer protocol for future micro-satellites
(Stellenbosch : Stellenbosch University, 2003-04)
ENGLISH ABSTRACT: This thesis investigates the viability of implementing the AX.25 protocol in Java, for
satellite applications. The AX.25 protocol forms part of the Communications subsystem
of a micro-satellite. It ...
The evaluation of a SoC processor as an on-board computer for a low earth orbit satellite
(Stellenbosch : Stellenbosch University, 2005-04)
ENGLISH ABSTRACT: The use of commercial-off-the-shelf components in low earth orbit (LEO) satellite systems
has become a very popular design trend. Not only are many of these components
sufficiently radiation tolerant, ...