%0 Conference Proceedings %T 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, %+ Vinci Construction France %+ Méthodes d'Analyses pour le Traitement d'Images et la Stéréorestitution (MATIS) %+ Lab-STICC_ENSTAB_CID_SFIIS %+ Pôle STIC_OSM %+ Laboratoire d'Opto-électronique et de Micro-Informatique (LOEMI) %A Daakir, M. %A Pierrot-Deseilligny, Marc %A Bosser, Pierre %A Pichard, F. %A Thom, Christian %A Ribot, Y %< avec comité de lecture %B EuroCOW 2016 %C Lausanne, Switzerland %3 EuroCOW 2016, the European Calibration and Orientation Workshop %P 65-70 %8 2016-02-10 %D 2016 %R 10.5194/isprs-archives-XL-3-W4-65-2016 %Z Engineering Sciences [physics]/Signal and Image processingConference papers %X 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. %G English %L hal-01391298 %U https://hal.science/hal-01391298 %~ UNIV-BREST %~ INSTITUT-TELECOM %~ ENSTA-BRETAGNE %~ CNRS %~ UNIV-UBS %~ ENSTA-BRETAGNE-STIC %~ ENIB %~ LAB-STICC_ENIB %~ LAB-STICC %~ INSTITUTS-TELECOM %~ IGN-ENSG