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LSST Schedulerrequirements
Francisco DelgadoSr. Software Engineer
Telescope & Site
2
Scheduler Interfaces in OCS
SchedulerTelemetry
History
Control
Targets
Image Quality
OCS Application
communications middleware
TCSEFD DMCS
OCS Sequencer
VisitsSchedTelem
CCS
CmdVisits
Scheduler Internal Block Diagram
Conductor
Slew Time
Scheduling Data
Candidates
Observation History
Scheduler
Control
Telemetry
History
Image Quality
Visits
Targets
Sched Telem
Sched Mode
Downtime
Degraded
Targets
Observatory conditions
Environment conditions
Forecast
Quality parameters
Past observations
Current observation
Sched Telem
Astronomical Sky
Sky brightness
coordinates
Science ProgramsValue functions
Cost functions
Time
Observatory Model
Kinematic model
coordinates
CandidatesEnvironment conditions
Sched Config
3
4
Requirements Flow down
Science Requirements Document
LPM-17
Scheduler RequirementsDOC-16282
Observatory System Specifications
LSE-30
LSST System Requirements
LSE-29
OpSim RequirementsDOC-15320Observatory Control
System RequirementsLSE-62
Science Book
Metrics RequirementsDOC-15319
Science Collaborations
5
Scheduler Requirements
2.1Inputs2.1.1 Survey Parameters2.1.2 Scheduling Parameters2.1.3 System Parameters2.1.4 Internal Conditions2.1.5 External Conditions2.1.6 Performance Feedbacks
6
Scheduler Requirements
2.2Outputs2.2.1 Next Target2.2.2 Predicted Schedule2.2.3 Scheduling Meta Data2.2.4 Survey Progress
7
Scheduler Requirements
2.3 Functional Requirements2.3.1 Observatory Model2.3.2 Update Observatory Model2.3.3 Scheduler History2.3.4 Science Proposals2.3.5 Sequences in Time Distribution
Proposals2.3.6 Sky Brightness Model2.3.7 Update Sky Brightness Model
8
Scheduler Requirements
2.3.8 Cost Function2.3.9 Filter Swap2.3.10 Self-balancing Proposal Progress2.3.11 Deterministic Look Ahead2.3.12 Downtime Handling2.3.13 Warm start capability2.3.14 Dithering2.3.15 Operation in Event of Input Failure
9
Scheduler Requirements
2.4 Performance Requirements2.4.1 Speed
2.5 Attributes2.5.1 Multiple Scheduling Algorithms2.5.2 Algorithms from OpSim2.5.3 Optimizations from OpSim2.5.4 Global Survey Optimization