SAIF

The SAIF (Submeter-class Augmentation with Integrity Function) signal is a GPS augmentation with information on positioning correction and system health.

The SAIF uses an object-oriented data model which should be realized by the data definition language, named SAIFtalk.

And while there are numerous efforts to standardize data models (SAIF, SDTS, DIGEST, GDF), so far none of these attempt to standardize the operations as well.

See also: Relation, Location, Geographic, Boundary, Soil