Accuracy Management of LiDAR Data Using GPS Ground Control Points

Nuray BAŞ, Hakan ÇELİK, H. Gonca COŞKUN


Nowadays, both faster and more accurate data acquisition studies are gradually gaining speed, different of traditional land surveying technics in order to obtain land data having high accuration and geometric resolution on mapping. In this study, it is aimed that, to test with RTK/GPS (Real Time Kinematic-Global Positioning System) data of LiDAR (Light Detection and Ranging) Technology, as Remote Sensing Technic, making detection at 1.064nm near infrared region of electromagnetic spectrum in terms of planimetric and vertical accuracy. İn this context, 2x2 km2 forested land, located in Borçka province of Artvin City in the Eastern Black Sea Region of Turkey was selected as study area. In this study, position and elevation differences were estimated between Ground Control Points (GCP) acquired by RTK- and the corresponding LiDAR points, and then, the relationship between the accuracies of these values was tested with search radius method as compared with. Vertical error (RMSEz) was found as 0.20m in normal distribution while it was 0.39 m, vertical accuracy (accuracyz) in 95% confidence interval, Planimetric error (RMSEr) was found as minimum 0.36m, maximum 1.01m, while it was minimum 0.62m, maximum 1.75m planimetric accuracy (accuracyr) in 95% confidence interval. As a result, it was seen that the horizontal error was as twice as the vertical error.

Anahtar Kelimeler

LiDAR, GPS (RTK), search radius technic, horizontal and vertical accuracy

Tam Metin:



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