instituted by ‘Servizio Trigonometrici
dell’Ufficio tecnico Erariale di Reggio
Calabria’.
The following trigonometrie vertexes were
taken as known points:
• CARPIONANO
• RIGHI
• S. BARBARA
• ULIS.
The place of Gambarie is very far from the
other three places and the available instruments
allowed only a distance of 10 Km, so it was
decided to operate with two different networks.
The survey of the places mentioned above was
done using GPS receiver for the places:
• GAMBARIE
• RAVAGNESE (SARACINELLO).
On the contrary, it was adopted a mixed
methodology, with GPS and a topographic
integrated station in the places:
• PENTIMELE
• RC CENTRO,
because the nature of the places obliged us to
work with stations ex-centre.
The GPS was used with static methodology
and the topographic survey involved the
measure of a side.
2. Instruments and survey of the places
The GPS instruments was constituted by four
satellite receiver, GEOTRACER 100 of
Geotronichs Instruments; two of them were
with single frequency and the other two with
double frequency.
The topographic instruments was constituted
by an integrated topographic station from the
same firm. 2
The data were acquired with the static method,
that means that one of the receiver was placed
on a known point and the other one on the
place which had to be surveyed. The operation
has to last at least one hour and a half.
The following figure shows the graphical
schema of the network of the three points that
allowed to determine the places of Gambarie.
Moreover, the legenda allows to understand
this first network.
Carpignono
S. Barbara
Legenda:
•
Points TIM
O
Location antenna GPS
Known points (Official net)
The following picture shows the graphical
schema of the net of four vertexes (all of them
are connected) that allowed the determination
of the three places closes to the town. The
correspondent legenda allows to understand
this second network.
2 All the instruments that have been used belong to
the ‘ Ufficio Tecnico Erariale di Reggio Calabria’
and have been lended to us for this work.
