Tidal Datums

ATLAS ellipsoid solutions from the EOS Arrow Gold are relative to ITRF2008. The recorded vertical position is the receiver phase center, 2.2187 m above the measured point (2.180 m pole and spike, 0.003 m mounting bracket, 0.0357 m Arrow Gold phase center). The ITRF2008 comparison value subtracts that receiver/pole offset from the displayed datum. Local mean-sea-level elevations use point height minus island datum, so this offset cancels within the field guide.

ATLAS ellipsoid solutions from the EOS Arrow Gold are relative to ITRF2008. The recorded vertical position is the receiver phase center, 2.2187 m above the measured point (2.180 m pole and spike, 0.003 m mounting bracket, 0.0357 m Arrow Gold phase center). The ITRF2008 comparison value subtracts that receiver/pole offset from the displayed datum. Local mean-sea-level elevations use point height minus island datum, so this offset cancels within the field guide.

ATLAS ellipsoid solutions from the EOS Arrow Gold are relative to ITRF2008. The recorded vertical position is the receiver phase center, 2.2187 m above the measured point (2.180 m pole and spike, 0.003 m mounting bracket, 0.0357 m Arrow Gold phase center). The ITRF2008 comparison value subtracts that receiver/pole offset from the displayed datum. Local mean-sea-level elevations use point height minus island datum, so this offset cancels within the field guide.

ATLAS ellipsoid solutions from the EOS Arrow Gold are relative to ITRF2008. The recorded vertical position is the receiver phase center, 2.2187 m above the measured point (2.180 m pole and spike, 0.003 m mounting bracket, 0.0357 m Arrow Gold phase center). The ITRF2008 comparison value subtracts that receiver/pole offset from the displayed datum. Local mean-sea-level elevations use point height minus island datum, so this offset cancels within the field guide.