Ground rules for spatial operations algorithm development (cont’d)
GR 3: Define a meaningful error measure:
- use a Euclidean position error metric where this makes sense,
- convert angular errors to position errors,
- use a maximum position error over the entire region of interest.
- avoid the use of average absolute component errors.
GR 4: Avoid excessive accuracy:
- the SEDRIS goal is a maximum of 1mm position error over a region,
- avoid algorithms designed to yield errors like 10-08 or 10-20 if computational
resources are required to achieve such accuracies.
GR 5: Set an acceptable error goal before starting development:
- for the SEDRIS accuracy goal, 0,000 9 mm, is < 0,022 860 in, is < 1/32 in,
- note that when the maximum position error is small the component errors
- when angular errors are changed to position errors a small position
error usually implies a very small angular error.