Why is Accuracy Needed for Coordinate Operations?
* Lucha, G. V., On the Consequences of Neglecting Measurement
Accuracy Issues in Live and Virtual interactions”, SIW Spring 1997
In real world, it has been difficult to measure positions on the surface of the Earth to better than 1 meter.
- This situation is changing due to new technology developments.
- GPS now can achieve absolute accuracy of about 21 cm (SEP 90%) over large regions.
Real-world applications mostly use relative spatial referencing and less often absolute spatial referencing.
- Dynamically correct location errors by using on-board sensors.
In many applications, both relative and absolute spatial referencing scenarios must be accurately portrayed.
Mixing of live & synthetic environments has special accuracy requirements*.
Mission planning, rehearsal, & conduct of real operations have situation-dependent accuracy requirements.