ISSUES RELATING TO THE PROCESSING OF GPS VECTOR AS A NETWORK TRILATERATION USING COMPUTER SYSTEMS TRIMBLE TOTAL CONTROL AND TOPOSYS PUBLISHED

Gheorghe CRAINIC, Vasilica Laura DAMIAN, Mihaela SPILCA
Using modern technology dense works currently trigonometrical control network, offers several advantages, because data collection methods and respectively their processing systems. The work explores the possibility of GPS vector processing, register with the network trilateration GNSS technology, thus representing an alternative process, verification of those registration and the results obtained by other methods of calculation. Working methods are based on the use of GNSS technology for registration data and systems Trimble Total Control  and TopoSys for processing those in order to simulate two variants of determining the points spacial positioned. Getting the final details in the national reference system for the processed points as trilateration network is realised through indirect measurements method. To analyze the differences of coordinates corresponding processed points as trilateration network and respectively as vector network was used  a  statistical test Dwass Steel. Using two different types of data processing registered with GNSS technology offers the possibility to optimize work process and respectively checking the solutions obtained. Processing  data recorded as  network trilateration needs a minimum of four control points from the trigonometrical control network related work area, determined in both reference systems, which will be used to produce elements of transformation and implicitly to obtain the final coordinates, in the national reference system. As a practical importance, this method does not require advance knowledge of national transformation parameters, area or local issue that has direct implications on the positioning accuracy spatial determinated points. The accuracy of determining the vectors  and implicitly the points position can be analyzed efficiently if the GPS vector processing trilateration network of data processing report where they are presented in detail. Data processing computer systems specialist, offers the opportunity to efficiency the work process, the results obtained by different variants of calculation can be compared, some  processing errors in this situation can be detected relatively easy. Because this calculation possibility involves the existence of efficient logistics, there is currently a restraint regarding the use in parallel of some computing system performance to ensure verification solutions obtained.
triangulation, calcul systems, primary coordinate, final coordinate, coordinate transformation, transformation parameters, coordinate differences
Presentation: oral

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