19
precision when using
using more stations and
rom our point of view,
ince it is too difficult to
m different stations,
ndant measurements or
the antenna for control
ual adjustment,
and the orientation of
>n surveying from one
of the co-ordinates
each station in respect
ocal network of all
shown in the figure
: range of 10 cm.
ation and intersection
sted as a minimum
s local GPS station,
en arbitrarily and thus,
loice.
are the calculated co-
he calculated antennae
ted one in the detailed
s differences in the co
large, and they could
Fig. 9 - Graphical representation of the co-ordinate differences between
MDL measurement and the combined one.
Tab. 4 - the differences between the given co-ordinates of antennae frame center
and the calculated co-ordinates, where the co-ordinates and rms are in meter.
Differences of co-ordinates in the Italian National System (G.B)
Site
N
rms*
E
rms
H
rms
dn (m)
de (m)
dh (m)
Bo-ASST
4930092.3
0.08
1686579.9
0.08
77.1
0.1
-55.9
5.8
-3.2
UNICOPER
4931623.1
0.07
1687752.1
0.07
85.3
0.1
-8.4
71.6
7.5
STADIO
4929506.2
0.08
1683981.2
0.08
53.7
0.1
-71.5
87.4
-1.3
BO- CENTRO
4929691.4
0.08
1686368.2
0.08
113.0
0.1
10.5
-64.6
-3.6
GRIZZANA
4903445.8
0.12
1672095.1
0.12
683.3
0.15
-56.9
2.3
//
* the rms include the errors in transformation parameters
Tab. 5 - The differences between the given orientation of the antenna panels in
the detailed drawing and the calculated one
structure
given
Calculated *
Diff.
BO- ASST
60
73° 15’+- 32’
13° 15’
180
182° 30’+- 16’
2° 30’
300
309° 12’ +- 40’
9° 12’
UNICOPER
60
III
//
180
III
//
300
318° 32’ +-4’
18° 32’
STADIO
60
III
//
180
197° 50’ +- 8’
17° 50’
300
296° 09’ +- 8’
-4° 51’
GRIZZANA
60
67° 45’ +- 6’
7° 45’
180
165° 15’ +-4’
-14° 45’
300
264° 6’
35° 54’
Bo-Centro
104°
108°18’
4° 18’
194°
198°18’
4° 18’
284°
oo
r—<
O
CO
oo
<N
4° 18’
* the rms related to the adjusted redundant measurements.