SRM requirements
Completeness, must:
- include coordinate systems in wide usage.
- tie those systems together into a commonly used framework.
- educate the system developer.
- E.g., What’s a horizontal datum, a vertical datum, a geoid?
Accuracy
- Generally higher than required for C4ISR systems.
- E.g., Typically better than 1 cm. up past geosynchronous orbit (nominally 1 mm near the ERM surface).
- Computation of operations in spatial frames must not impact
application validity.
Performance
- Never fast enough!
- Many environmental data sets dominated by location data.
- Therefore efficient inter-conversion is 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).
SEDRIS algorithms and implementations are very accurate and 2-5x faster than algorithms/implementations reported in the literature.