TY - JOUR
T1 - Evaluation of NRTK GNSS positioning methods for displacement detection by a newly designed displacement monitoring system
AU - Gümüş, Kutalmış
AU - Selbesoğlu, Mahmut Oğuz
N1 - Publisher Copyright:
© 2019
PY - 2019/8
Y1 - 2019/8
N2 - Nowadays, Global Navigation Satellite Systems (GNSS)are widely used for deformation monitoring of structures (dams, skyscrapers, etc.), rail systems and landslides. In this study, a displacement monitoring system was designed to evaluate the precision and accuracy of FKP (Flächen Korrektur Parameter), VRS (Virtual Reference Station)and MAC (Master Auxiliary Concept)Network Real Time Kinematic (NRTK)GNSS methods for determining the vertical and horizontal displacements. For this purpose, the distances (simulated displacements)were measured on the X, Y and h coordinate axes using NRTK methods and Static GNSS Technique and compared with the displacements measured by an interferometer (0.1 mm precision)on this designed system. Displacements measured by using the displacement monitoring system were accepted as true values. In general, NRTK methods provides sufficient precision for determining the displacements respect to displacement monitoring system results. Performance of the FKP correction method is better especially on horizontal axes, while MAC method on vertical. In the overall assessment, average differences of displacements between VRS, FKP and MAC methods and the displacement monitoring system were found 6.8 mm, 5.1 mm and 5.2 mm, respectively. Mean square errors of NRTK method was found 4.7 mm in horizontal and 7.9 mm in vertical for overall assessment.
AB - Nowadays, Global Navigation Satellite Systems (GNSS)are widely used for deformation monitoring of structures (dams, skyscrapers, etc.), rail systems and landslides. In this study, a displacement monitoring system was designed to evaluate the precision and accuracy of FKP (Flächen Korrektur Parameter), VRS (Virtual Reference Station)and MAC (Master Auxiliary Concept)Network Real Time Kinematic (NRTK)GNSS methods for determining the vertical and horizontal displacements. For this purpose, the distances (simulated displacements)were measured on the X, Y and h coordinate axes using NRTK methods and Static GNSS Technique and compared with the displacements measured by an interferometer (0.1 mm precision)on this designed system. Displacements measured by using the displacement monitoring system were accepted as true values. In general, NRTK methods provides sufficient precision for determining the displacements respect to displacement monitoring system results. Performance of the FKP correction method is better especially on horizontal axes, while MAC method on vertical. In the overall assessment, average differences of displacements between VRS, FKP and MAC methods and the displacement monitoring system were found 6.8 mm, 5.1 mm and 5.2 mm, respectively. Mean square errors of NRTK method was found 4.7 mm in horizontal and 7.9 mm in vertical for overall assessment.
KW - Accuracy
KW - Deformation monitoring
KW - Displacement
KW - Displacement monitoring system
KW - FKP
KW - MAC
KW - Network RTK
KW - Precision
KW - Static GNSS
KW - VRS
UR - http://www.scopus.com/inward/record.url?scp=85065225012&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2019.04.041
DO - 10.1016/j.measurement.2019.04.041
M3 - Article
AN - SCOPUS:85065225012
SN - 0263-2241
VL - 142
SP - 131
EP - 137
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
ER -