Volume XL-3/W4
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W4, 65-70, 2016
https://doi.org/10.5194/isprs-archives-XL-3-W4-65-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W4, 65-70, 2016
https://doi.org/10.5194/isprs-archives-XL-3-W4-65-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  17 Mar 2016

17 Mar 2016

STUDY OF LEVER-ARM EFFECT USING EMBEDDED PHOTOGRAMMETRY AND ON-BOARD GPS RECEIVER ON UAV FOR METROLOGICAL MAPPING PURPOSE AND PROPOSAL OF A FREE GROUND MEASUREMENTS CALIBRATION PROCEDURE

M. Daakir1,4, M. Pierrot-Deseilligny2,4, P. Bosser3, F. Pichard1, C. Thom4, and Y. Rabot1 M. Daakir et al.
  • 1Vinci-Construction-Terrassement, 1, Rue du docteur Charcot, 91421 Morangis, France
  • 2Universit´e Paris-Est, IGN, ENSG, LOEMI , 6-8 Avenue Blaise Pascal, 77455 Champs-sur-Marne, France
  • 3ENSTA Bretagne-OSM Team, 2 rue Francois Verny, 29806 Brest, France
  • 4Universit´e Paris-Est, IGN, SRIG, LOEMI, 73 avenue de Paris, 94160 Saint-Mande, France

Keywords: UAV, photogrammetry, GPS, lever-arm, calibration, direct-georeferencing, synchronisation, MicMac

Abstract. Nowadays, Unmanned Aerial Vehicle (UAV) on-board photogrammetry knows a significant growth due to the democratization of using drones in the civilian sector. Also, due to changes in regulations laws governing the rules of inclusion of a UAV in the airspace which become suitable for the development of professional activities. Fields of application of photogrammetry are diverse, for instance: architecture, geology, archaeology, mapping, industrial metrology, etc. Our research concerns the latter area. Vinci-Construction- Terrassement is a private company specialized in public earthworks that uses UAVs for metrology applications. This article deals with maximum accuracy one can achieve with a coupled camera and GPS receiver system for direct-georeferencing of Digital Surface Models (DSMs) without relying on Ground Control Points (GCPs) measurements. This article focuses specially on the lever-arm calibration part. This proposed calibration method is based on two steps: a first step involves the proper calibration for each sensor, i.e. to determine the position of the optical center of the camera and the GPS antenna phase center in a local coordinate system relative to the sensor. A second step concerns a 3d modeling of the UAV with embedded sensors through a photogrammetric acquisition. Processing this acquisition allows to determine the value of the lever-arm offset without using GCPs.