SRM Requirements
Completeness
- Must include coordinate systems in common usage
- Must tie those systems together into a common framework
- Must educate the system developer
- e.g., What’s a horizontal datum? A vertical datum?
Accuracy
- Generally higher than required for C4ISR systems
- Typically better than 1 cm, up past geosynchronous orbit
Performance
- Never fast enough!
- Many environmental data sets dominated by location data
- Therefore efficient interconversion key to meeting 72-hour “ready-to-run” mandate
- Federate costs for distributed simulation using heterogeneous coordinate systems can be substantial (e.g., 20% or more).