GS_032
a
a
The Antenna Reference Plane
is the underside of the threa-
ded metal insert.
24.3
Determining Antenna Heights
24.3.1
Pillar Setup
•
One of the Leica standard antennas is used, for example GS15. All former
Leica antenna types are supported.
•
Leica standard accessories are used.
GS_033
d
a
b
c
a
Antenna Reference Plane
(ARP)
b
Vertical phase centre offset
for L1
c
Vertical phase centre offset
for L2
d
Vertical height reading
Vertical offset = 0.00 m
The vertical height reading is the height difference between the pillar bench-
mark and the Antenna Reference Plane of the antenna. Normally, it is deter-
mined indirectly by levelling.
Sometimes, it is difficult to measure to the MRP directly.
1.
Determine the height difference between the pillar benchmark and a
surface on the carrier.
2.
Look up the height difference between this surface on the carrier
and where the MRP of the antenna sits on the carrier.
3.
Add the values determined in step 1. and 2., to get the
vertical
height reading
.
4.
For Leica standard antennas plus accessories, the
vertical offset
is
0.00 m.
AS05/AS10
☞
Pillar setup
Vertical height read-
ing
Determine the
antenna height step-
by-step
294
Antenna Heights
