Portrait of HSTS Space Observatory Scheduler
Head: Stephen Smith
Contact: Toshio Sato
Associated Lab: Intelligent Coordination and Logistics Laboratory
Last Project Publication Year: 1992

The observation scheduler for HST that was developed was shown to scale to the full problem, producing observation schedules complete with all necessary enabling activities such as instrument reconfiguration, telescope repointing, data communication, etc. in a time frame acceptable for actual application. Complementary results demonstrated the ability of multi-perspective scheduling techniques to produce better quality schedules, in terms of balancing conflicting mission objectives, than a variant of the short-term scheduling algorithm currently being used in HST mission operations. More recently, HSTS has been used to develop of scheduler for application to a second orbiting telescope, the Small Wave SubMillimeter Astronomy Satellite (SWAS), currently due to be launched in June 1995. In collaboration with the SWAS mission team, we are currently evaluating the developed scheduler on full scale reference problems.

At CMU, we have incorporated HSTS solution representation and management concepts into the design of DITOPS a configurable, mixed-initiative planning and scheduling system.

Displaying 7 Publications
Balancing Antagonistic Time and Resource Utilization Constraints in Oversubscribed Scheduling Problems
Stephen Smith and Dhiraj Pathak

Conference Paper, Proceedings Eighth IEEE Conference on Applications of Artificial Intelligence, pp. 113 - 119, March, 1992
Decomposability and Scalability in Space-Based Observatory Scheduling
Nicola Muscettola and Stephen Smith

Miscellaneous, Working Notes, 1992 Stanford Spring Symposium on Practical Approaches to Planning and Scheduling, March, 1992
Coordinating space telescope operations in an integrated planning and scheduling architecture
Nicola Muscettola, Stephen Smith, A. Cesta and D. D'Aloisi

Journal Article, IEEE Control Systems Magazine, Vol. 12, No. 1, pp. 28 - 37, February, 1992
Coordinating Space Telescope Operations in an Integrated Planning and Scheduling Framework
Nicola Muscettola, Stephen Smith, A. Cesta and D. D'Aloisi

Conference Paper, Proceedings of the 1991 IEEE International Conference on Robotics and Automation (ICRA '91), Vol. 2, pp. 1369 - 1376, April, 1991
Integrating Planning and Scheduling to Solve Space Mission Scheduling Problems
Nicola Muscettola and Stephen Smith

Workshop Paper, Proceedings 1990 DARPA Workshop on Innovative Approaches to Planning, Scheduling and Control, November, 1990
Planning the Behavior of Dynamical Systems
Nicola Muscettola

Tech. Report, CMU-RI-TR-90-10, Robotics Institute, Carnegie Mellon University, April, 1990
Generating Space Telescope Observation Schedules
Nicola Muscettola, Stephen Smith, G. Amiri and Dhiraj Pathak

Tech. Report, CMU-RI-TR-89-28, Robotics Institute, Carnegie Mellon University, November, 1989

Past Project People

  • Toshio Sato
  • Nicola Muscettola