Javad Prego Operator's Manual page 74

S E T U P A N D M E A S U R I N G
3
Prego Setup
Antenna
Antenna-3
The actual point to which measuring with GPS/GLONASS measures is
called the Phase Center of the antenna. This is analogous to the point at
which a distance meter measures in a prism. A user must enter the prism
offset to compensate for this point not being at a physical surface of the
prism.
3-4 Prego Operator's Manual
Figure 3-2. Antenna Offset Measurements
Table 3-2. Antenna-3 Offset Measurements
Radius
0.123m 0.114m
0.4 ft 0.37 ft
A, Vertical C, Slant Offset
Offset (L1) (L1)
0.033m
0.11 ft
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