QLF08_LaBel.pdf - 第7页
IC and Component Selection for Space Sy stems – Presented by Kenneth A . LaBel 7 Performance Requirements • Rationale – T rying to meet science, surveillance, or other performance requirements • Personnel involved – Elec…
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
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IC Selection Requirements
• To begin the discussion, we shall review IC
selection from three distinct and often contrary
perspectives
– Performance,
– Programmatic, and,
– Reliability.
• Each of these will be considered in turn, however,
one must ponder all aspects as part of the
process
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
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Performance Requirements
• Rationale
– Trying to meet science, surveillance, or
other performance requirements
• Personnel involved
– Electrical designer, systems engineer,
other engineers
• Usual method of requirements
– Flowdown from science or similar
requirements to implementation
• I.e., ADC resolution or speed, data
storage size, etc…
• Buzzwords
– MIPS/watt, Gbytes/cm
3
, resolution,
MHz/GHz, reprogrammable
• Limiting technical factors beyond
electrical
– Size, weight, and power (SWaP)
Performance
Inside a Apple
iPhone™ player
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
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Programmatic Requirements and
Considerations
• Rationale
– Trying to keep a program on schedule
and within budget
• Personnel involved
– Project manager, resource analyst,
system scheduler
• Usual method of requirements
– Flowdown from parent organization
or mission goals for budget/schedule
• I.e., Launch date
• Buzzwords
– Cost cap, GANTT/PERT chart, risk
matrix, contingency
• Limiting factors
– Parent organization makes final
decision
Programmatics
A numbers game