Abstract:In this study, for Istanbul, there are two Cors Networks (Cors-TR, Iski Cors) providing Virtual Reference Station (VRS), and Flachen Korrektur Parameter (FKP), corrections to rover receiver for determining 3-D positions in real time by Global Positioning System (GPS). To determine which method (or technique) provides accurate method for position fixing, a test network consisting of 49 stations was set up in Yildiz Technical University Davudpasa Campus. The coordinates of the stations in the test network were d… Show more
“…When the stations were planned, the most optimal data were taken into consideration to observe the movements of the plate (Mekik et al, 2011;Uzel et al, 2011). These control centers send correction data to the user using FKP, MAC and VRS techniques (Gumus et al, 2012). (Yıldırım et al, 2013) 1.2 Network RTK correction Techniques…”
Section: Cors-trmentioning
confidence: 99%
“…The global positioning system (GPS) provides precision at cm level when the position is determined by a relative method (Seeber, 2003). However, requiring at least two receivers, precise trajectory information, and software knowledge, the relative method is not efficient in performing positioning in terms of the time and effort (Gumus et al, 2012;Tusat and Ozyuksel, 2018). Today, developments in GPS/GNSS technology have enabled real-time determination of point locations.…”
Section: Introductionmentioning
confidence: 99%
“…A few studies have investigated which correction method works better for the CORS-TR system. (Gumus et al, 2012), Forty-nine different coordinates obtained from RTK, CORS-TR and IskiCors were corrected using FKP and MAC and the results were compared with the classical local method of total station measurements. The authors reported that the performance of the correction methods for the CORS-TR system was superior.…”
In recent years, the continuously operating reference station-Turkey (CORS-TR) system has been widely used in engineering and cadastral work in Turkey due to ease of use, low cost, and national legislative requirements. In this study, long-term Network RTK (Real-time Kinematic) data were collected under 10°, 20°, 30° and 40° satellite views using a different approach from previous work. In order to evaluate the positioning performance of the system, the measurements were undertaken at different elevation angles (open, partially blocked and extremely blocked) and by considering three different correction techniques (FKP, VRS and MAC), and the results were evaluated in terms of repeatability. From the analysis of the data, it was understood that the performances of the three correction techniques were generally similar, and even in the case of a limited satellite view, the errors remained below 7 cm in all three techniques. However, when the 2D and 3D components were analyzed together, VRS technique showed better results than the other two techniques.
“…When the stations were planned, the most optimal data were taken into consideration to observe the movements of the plate (Mekik et al, 2011;Uzel et al, 2011). These control centers send correction data to the user using FKP, MAC and VRS techniques (Gumus et al, 2012). (Yıldırım et al, 2013) 1.2 Network RTK correction Techniques…”
Section: Cors-trmentioning
confidence: 99%
“…The global positioning system (GPS) provides precision at cm level when the position is determined by a relative method (Seeber, 2003). However, requiring at least two receivers, precise trajectory information, and software knowledge, the relative method is not efficient in performing positioning in terms of the time and effort (Gumus et al, 2012;Tusat and Ozyuksel, 2018). Today, developments in GPS/GNSS technology have enabled real-time determination of point locations.…”
Section: Introductionmentioning
confidence: 99%
“…A few studies have investigated which correction method works better for the CORS-TR system. (Gumus et al, 2012), Forty-nine different coordinates obtained from RTK, CORS-TR and IskiCors were corrected using FKP and MAC and the results were compared with the classical local method of total station measurements. The authors reported that the performance of the correction methods for the CORS-TR system was superior.…”
In recent years, the continuously operating reference station-Turkey (CORS-TR) system has been widely used in engineering and cadastral work in Turkey due to ease of use, low cost, and national legislative requirements. In this study, long-term Network RTK (Real-time Kinematic) data were collected under 10°, 20°, 30° and 40° satellite views using a different approach from previous work. In order to evaluate the positioning performance of the system, the measurements were undertaken at different elevation angles (open, partially blocked and extremely blocked) and by considering three different correction techniques (FKP, VRS and MAC), and the results were evaluated in terms of repeatability. From the analysis of the data, it was understood that the performances of the three correction techniques were generally similar, and even in the case of a limited satellite view, the errors remained below 7 cm in all three techniques. However, when the 2D and 3D components were analyzed together, VRS technique showed better results than the other two techniques.
This study examines the effect of baseline length on accuracy and precision in Network Real-Time Kinematic (NRTK) positioning and develops an experimental mathematical model to express this effect. The study also measures the performances of the Flaechen Korrektur Parameter (FKP) and Virtual Reference Stations (VRS) methods at different baseline lengths. The study makes use of the stations that form two Continuously Operating Reference Station (CORS) networks, one of which is local and the other national. Calculations were made to perform various geodetic operations, such as datum transformations between the two networks, identifications of positional velocities, and epoch shifting. BERNESE (v5.2) software was used to identify coordinate values assumed to be true based on International GNSS Service (IGS) products. No significant changes were observed in the RMSE values in baseline lengths of up to 40 km. In contrast, an average linear correlation of 69.2% was determined between precision and baseline length. Measurements were evaluated and tested using the variance model created as a function of the baseline length, in line with the aims of the study, and the results were found to be consistent. Moreover, in an examination of the Root Mean Square Error (RMSE) and precision values of the FKP and VRS measurements, no significant differences were observed. The mean differences were at the millimetre level.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.