L. L. Barliba, C. Barliba, G. Eles, D. Lucian
Monday 5 August 2013 by Libadmin2013

References: 13th SGEM GeoConference on Informatics, Geoinformatics And Remote Sensing, www.sgem.org, SGEM2013 Conference Proceedings, ISBN 978-954-91818-9-0 / ISSN 1314-2704, June 16-22, 2013, Vol. 1, 355 - 362 pp


Considering that solving the traditional measuring problem involve higher prices of the
work and also makes graphical representations harder to accomplish, the way towards
developing a method of global positioning and of developing reference systems led to
the appearance of satellite geodesy.
The sustainable preoccupation, in order to introduce and use the modern electronic
devices in cadastre works is natural, normal and fully justified by economic reasons.
Nowadays, GPS is in such a stage of development that we are entitled to talk about a
real geodesic revolution. The incredible performance, the constant improvement of
performance, and high accuracy of GPS receivers make this system dominant when
talking about most geodesic works.
The paper presents the topogeodesic determination of a parcel contour, with a large
surface which required the geodetic survey of the perimeter by GPS techniques.
The GPS technique requires simultaneous measurements from minimum 4 satellites
with two or more receivers that can be fixed or mobile. The fixed receiver is positioned
above the control point throughout the measurements stage while the mobile one moves
from point to point. Combining the measurements with both receivers, we obtain a
three-dimensional vector between the fixed receiver and the mobile one. That vector is
called “the zero axis. In order to determine the position of the mobile receiver, as related
to the fixed one, there are some approaches which differ according to the time necessary
for obtaining the zero axis. Thus, there are:
- real time techniques;
- postprocessed techniques.
By “real time measurements,” we mean to obtain definitive results directly in the field,
at the observation time. One characteristic of this method consist in modem
transmission of the observations from the fixed stations to mobile receivers. Data are
postprocessed: after collecting a certain amount of information, it is processed in the
The area determination was made, and then the procedure was checked using traditional methods.

Keywords: Cadastral works, rectangular coordinates, GPS devices.

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