The Epoch-by-Epoch™ algorithm has been used to position platforms in a number of applications ranging from static to medium dynamic. Examples of moving platforms include land vehicles, race cars at speeds of about 150 mph, and commercial aircraft in flight. The precision stated here has been achieved on all of these platforms.

Under normal tracking conditions the real-time horizontal position precision (one-sigma) for a single epoch of GPS data collected from 5 or more satellites is approximately 1-2 centimeters. This accuracy is degraded linearly as the distance from the reference station increases. For every 1 km increase in distance the accuracy is degraded by 0.2 millimeters. The vertical precision is 3-5 times worse. For relatively short distances (less than 5 km), the horizontal precision is about 5 millimeters, with the vertical precision 2-3 times worse. This precision is achieved for both static and dynamic platforms.

The higher end of horizontal precision is valid for measurements in geomagnetic mid-latitude zones. The lower end is valid for measurements in geomagnetic equatorial and upper latitude zones.

Example of accuracies are depicted in the Dam Deformation Monitoring case study. The Performance Test below shows that almost all single-epoch horizontal positions fall within a circle with a radius of about 2 cm.