By Walt Truszkowski, Harold Hallock, Christopher Rouff, Jay Karlin, James Rash, Michael Hinchey, Roy Sterritt
This booklet presents an in-depth dialogue of self sustaining and autonomic structures, their interdependencies, ameliorations and similarities. present and pending concerns in those evermore more and more vital topics are highlighted and mentioned. techniques, principles and reports are explored on the subject of real-life NASA structures in spacecraft keep watch over and within the exploration area.
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Extra resources for Autonomous and Autonomic Systems: With Applications to NASA Intelligent Spacecraft Operations and Exploration Systems
So the process of transitioning from the symptoms speciﬁed by the parameters to the correction action (often a static table entry) that constitutes the diagnosis phase conceptually actually occurs (prelaunch) in the reverse order and the intellectual content is sketchily stored rigidly onboard. In the postlaunch phase, the systems engineers/FOT may encounter an unanticipated problem and must perform a diagnosis function using the telemetry downlinked to the ground. In such cases, operations personnel must rely on their experience (possibly with other spacecraft) and subject matter expertise to solve the problem.
In many of these cases, routine processes may ﬁrst be performed manually by operations personnel, following which automated ground software is developed to reduce costs. After the automated ground process has been fully tested operationally, the software or algorithms may then be migrated to the ﬂight system where further cost reductions may be achievable. Fourth, the process may be performed onboard in order to reduce demand on a limited resource. For example, downlink bandwidth is a valuable, limited quantity on most missions, either because of size/power constraints on spacecraft antennas/transmitters, or because of budget limitations on the size of the ground antenna.
3). This mission consists of a single spacecraft and utilizes a small number of people for operations. The Iridium satellite network has 66 1 To simplify, in the remainder of this book, since autonomicity builds on autonomy, we will simply refer to the combination of autonomous and autonomic systems simply as autonomy, except where explicitly noted. 3 Using Autonomy to Reduce the Cost of Missions 15 satellites, and it is estimated that initially, its primary operations consisted of 200 people, approximately three people per spacecraft – a 25% improvement over the WMAP mission.