NGAO System Design Phase System & Functional Requirements Documents NGAO Meeting #6 Peter Wizinowich April 25, 2007.

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NGAO System Design Phase System & Functional Requirements Documents NGAO Meeting #6 Peter Wizinowich April 25, 2007

2 System Requirements Document Living document (4 versions during System Design phase) –Intended to guide design –Avoids specific design or implementation solutions Science requirements –Science Performance requirements Includes assumptions about seeing & telescope environment –Science Instrument requirements –Shows flowdown from Science Case Requirements Document Observatory requirements Requirements by discipline –Optical, mechanical, electronics/electrical, safety, software, interface, reliability, spares, service & maintenance, documentation –Should show flowdown from Science & Observatory requirements Separate “Instrumentation Baseline Document” –More generic set of requirements applicable to all Keck instruments –These are not repeated in the SRD

3 Functional Requirements Document Living document (4 versions during System Design phase) –Intended to guide design –Provides source for compliance matrix against which design & delivered systems will be tested –Makes assumptions about specific design or implementation choices Divided up by major subsystems –Requirements for all subsystems section –Major subsystems: AO system, laser facility, science operations, telescope facility, deployable IFU, imager/spectrograph, IFU –Same breakdown as for SRD under each subsystem Optical, mechanical, electronics, etc. Flow down from SRD to subsystems (& major components) should be shown

4 System Requirements Replan

5 Functional Requirements Replan

6 Replan Milestones (changes in bold) MILESTONEDATEDESCRIPTION SD SEMP Approved 10/9/06 Approval of this plan by the Directors. Initial SEMP version released to Directors for comment on 9/12 & final version on 9/29/06. SD phase contracts in place 10/27/06 Contracts issued to Caltech & UCSC for the system design phase. Science Requirements Summary v1.0 Release 10/27/06 Initial Release of the Science Requirements as input to trade studies and performance budgeting System Requirements Document (SRD) v1.0 Release 12/8/06 Initial release of System Requirements with emphasis on the science requirements Performance Budgets Summary v1.0 Release 6/15/07 First round of all performance budgets complete & documented SRD v2.0 Release 5/22/07 Second release of System Requirements Doc Trade Studies Complete 6/8/07 All trade studies complete & documented (as a series of Keck Adaptive Optics Notes) SRD v3.0 Release 8/6/07 Third release of System Requirements System Design Manual (SDM) v1.0 Release 9/6/07 First release of System Design Manual Technical Risk Analysis v1.0 Release 9/21/07 First round of project risk analysis complete & documented Cost Review Complete 11/30/07 Project cost estimates complete, documented & internally reviewed SDM v2.0 Release 2/21/08 Second release of System Design Manual System Design Review Package Distributed 3/4/08 SDR documents sent to reviewers System Design Review 3/31/08 SDR meeting SDR Report & Project Planning Presentation at SSC meeting 4/14/08 Final SD phase report including results of SDR & project plans

7 Replan

8 Next Steps Complete the following items in May: –SCRD & SRD v2 –FRD v0 & Science Instruments FRD v1