Some of the vectors were up to 23 miles long. David also discussed a GPS survey conducted in Montana. In this case Continuing Operating Reference Stations in Oregon, Wisconsin, Utah, and Nevada provided the control. David obtained a vertical closure of 3cm against established local control. No problems were encountered.
Further tests are in order.
The Livermore Lab Continuous Operating Reference Station is expected to have it's data on the NGS web site some time in July. The NGS is currently working on the final adjustments to the reference station position. Their data is currently on the BARD site. A Windows version of Star Net will be out some time this fall. It was the consensus with in the group that most manufactures will handle this effectively.