Do you think the basics of this DGPS system are in place? How can a simple and inexpensive system like this be put back on track and ultimately achieve accuracy greater than a single, commercially ...

A satellite's positioning accuracy is impeded by errors in its clock and signal delays caused by atmospheric conditions. Also called a "differential GPS" (DGPS), an augmentation system compensates ...

Better than one meter accuracy is reportedly practical using a Trimble 4000 Maxwell as a reference station, a GPS mobile receiver of similar capability, and the ProBeacon to receive reliable and ...