Remote Sens. 2011, 3(9), 1902-1913; doi:10.3390/rs3091902
Article

Evaluating the Correctness of Airborne Laser Scanning Data Heights Using Vehicle-Based RTK and VRS GPS Observations

1,* email, 2email, 2email and 2email
Received: 12 July 2011; in revised form: 29 July 2011 / Accepted: 22 August 2011 / Published: 31 August 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In this study, we describe a system in which a GPS receiver mounted on the roof of a car is used to provide reference information to evaluate the elevation accuracy and georeferencing of airborne laser scanning (ALS) point clouds. The concept was evaluated in the Klaukkala test area where a number of roads were traversed to collect real-time kinematic data. Two test cases were evaluated, including one case using the real-time kinematic (RTK) method with a dedicated GPS base station at a known benchmark in the area and another case using the GNSSnet virtual reference station service (VRS). The utility of both GPS methods was confirmed. When all test data were included, the mean difference between ALS data and GPS-based observations was −2.4 cm for both RTK and VRS GPS cases. The corresponding dispersions were ±4.5 cm and ±5.9 cm, respectively. In addition, our examination did not reveal the presence of any significant rotation between ALS and GPS data.
Keywords: airborne laser scanning; GPS; RTK; VRS; accuracy; orientation
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MDPI and ACS Style

Dahlqvist, S.; Rönnholm, P.; Salo, P.; Vermeer, M. Evaluating the Correctness of Airborne Laser Scanning Data Heights Using Vehicle-Based RTK and VRS GPS Observations. Remote Sens. 2011, 3, 1902-1913.

AMA Style

Dahlqvist S, Rönnholm P, Salo P, Vermeer M. Evaluating the Correctness of Airborne Laser Scanning Data Heights Using Vehicle-Based RTK and VRS GPS Observations. Remote Sensing. 2011; 3(9):1902-1913.

Chicago/Turabian Style

Dahlqvist, Satu; Rönnholm, Petri; Salo, Panu; Vermeer, Martin. 2011. "Evaluating the Correctness of Airborne Laser Scanning Data Heights Using Vehicle-Based RTK and VRS GPS Observations." Remote Sens. 3, no. 9: 1902-1913.

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