6: Context sensitive help
GNSS management: Calculate the antenna height reading
The pictures below show examples for a standard setup of a Leica AT504/AT504 GG antenna on a pillar and a
tripod. They also illustrate the antenna height reading values and give an example of what a permanent antenna
setup could look like.
The Tripod setup illustrates the two different ways the height of the antenna can be measured. On the left the height
is determined by measuring the slope distance to an offset point on the antenna. On the right the height is measured
by using a height hook.
Pillar setup
Tripod setup
HO
=
Horizontal Offset
VO
=
Vertical Offset
VR
=
Vertical Height Reading
VE1
=
Vertical Phase Center Offset for L1
VE2
=
Vertical Phase Center Offset for L2
BPA
=
Physical Reference Plane (bottom of pre-amplifier)
ARP
=
Antenna Reference Point. Intersection of the BPA horizontal plane and the vertical symmetry
axis.
SR
=
Slope Height Reading
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