Do you want to participate in your FBN survey? The FBN survey presents a unique opportunity for GPS users
to upgrade and densify their local geodetic control network.
What is Required?
Observe FBN stations in three 5½ hour sessions, or 72 continuous
hours if possible, in accordance with the published schedule for your state.
Use geodetic quality dual-frequency receivers
with NGS "calibrated" antennas
and calibrated fixed-height tripods.