Quality assurance for spatial operations
- Specifying the quality of spatial operations requires error determination.
- The meaning of “error” depends on the context and application domain.
- Potential sources of error in spatial operations include:
- formulation error, approximation error, round-off error, truncation error and other errors associated with implementing the spatial operation.
- Errors of this nature should not be confused with errors arising from modeling the true shape of a celestial object (real or virtual) by an approximate shape.
- In the SRM, the reference surface used to approximate the shape of a celestial object, is assumed to be exact.
- How well a reference surface approximates the shape of a celestial object is outside the scope of the SRM.