Design, Development, and Testing of the Command and Data Handling Subsystem for Microsatellite Missions

A spacecraft is composed of multiple subsystems that work together to accomplish the mission objectives. One of the most vital subsystems is termed the “brain” of the spacecraft, more formally known as the command and data handling subsystem, which is responsible for commanding all other subsystems and managing all data sent and received by the spacecraft. This thesis describes the author’s contributions to the various aspects of the command and data handling subsystem for two microsatellite missions, with focus on work that can be extended for use and implemented on future space missions at the Space Flight Laboratory. Particular emphasis is given to the author’s work on design of a new serial interface board, optimization of both ground and satellite software related to payload data handling, and development of various application threads on satellite on-board computers and ground control interfaces.M.A.S