The design of a communication protocol for a distributed ADCS for SUNSAT 2

[摘要] ENGLISH ABSTRACT:One of the main subsystems of SUNSAT is the Attitude Determination andControl System (ADCS), responsible for the orientation and positioning of thesatellite. Due to the integrated architecture of the system, several shortcomingswere identified. A possible solution to the problems is the implementation of adistributed system. The design of a communication protocol for a distributedsystem is the focus of this thesis.An investigation on different network topologies and communication protocols aswell as error control techniques is carried out to establish a combination thatmeets the requirements of the ADCS. Based on defined protocol specifications adetailed protocol design is proposed. Then the protocol is implemented using alayered software structure that emanates from the OSI layering model, to providewell defined software structures and interfaces. A series of measurements haveshown that the protocol meets the functional requirements of the ADCS andfurther provides reliable data transfer on the network.

[发布机构] Stellenbosch University