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Croatian Journal of Forest Engineering : Journal for Theory and Application of Forestry Engineering, Vol. 31 No. 1, 2010.

Original scientific paper

Evaluating Repeatability of RTK GPS/GLONASS Near/Under Forest Environment

Atinç Pirti orcid id orcid.org/0000-0001-9197-3411 ; Department of Geodesy and Photogrammetry Engineering, 34349 Beşiktaş – Istanbul, TURKEY
Kutalmiş Gümüş ; Department of Geodesy and Photogrammetry Engineering, 34349 Beşiktaş – Istanbul, TURKEY
Halil Erkaya ; Department of Geodesy and Photogrammetry Engineering, 34349 Beşiktaş – Istanbul, TURKEY
Ramazan Gürsel Hoşbaş ; Department of Geodesy and Photogrammetry Engineering, 34349 Beşiktaş – Istanbul, TURKEY

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Abstract

Until the mid-1990s, post-processing was the only method available to determine survey- grade positions using GPS. Anew method was then introduced called Real-Time Kinematic (RTK). Real Time Kinematic surveying is an advanced form of relative GPS carrier phase surveying in which the base station transmits its raw measurement data to rovers, which then compute a vector baseline from the base station to the rover. RTK GPS shows a really efficient and fast improvement within today’s technological developments. The most important reason for using it is that this technique enables obtaining coordinates instantaneously and in the centimeter level accuracy. This technique is widely used in construction and survey applications because of its above mentioned properties. The aim of this paper is to evaluate the repeatability of RTK measurement accuracy under different satellite configurations near/in forest and unobstructed environments. Testing was performed by using GPS+GLONASS receivers under these conditions, i.e. tall trees forest and unobstructed areas. The obtained results of RTK testing were compared with results of total station surveying as a further quality check. Nevertheless, it appears that RTK measurements under forest environment with 1 cm accuracy cannot be guaranteed on all occasions, since difficult situations may lead to greater errors. These results indicate that integrating RTK GPS/ GLONASS system with total station is favored for surveying under forest environment.

Keywords

RTK GPS/GLONASS; Forest Environment; Total Station; Accuracy

Hrčak ID:

56925

URI

https://hrcak.srce.hr/56925

Publication date:

15.6.2010.

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