@article{StrohmeierWalterRotheetal.2018, author = {Strohmeier, Michael and Walter, Thomas and Rothe, Julian and Montenegro, Sergio}, title = {Ultra-wideband based pose estimation for small unmanned aerial vehicles}, series = {IEEE Access}, volume = {6}, journal = {IEEE Access}, doi = {10.1109/ACCESS.2018.2873571}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-177503}, pages = {57526-57535}, year = {2018}, abstract = {This paper proposes a 3-D local pose estimation system for a small Unmanned Aerial Vehicle (UAV) with a weight limit of 200 g and a very small footprint of 10 cm×10cm. The system is realized by fusing 3-D position estimations from an Ultra-Wide Band (UWB) transceiver network with Inertial Measurement Unit (IMU) sensor data and data from a barometric pressure sensor. The 3-D position from the UWB network is estimated using Multi-Dimensional Scaling (MDS) and range measurements between the transceivers. The range measurements are obtained using Double-Sided Two-Way Ranging (DS-TWR), thus eliminating the need for an additional clock synchronization mechanism. The sensor fusion is accomplished using a loosely coupled Extended Kalman Filter (EKF) architecture. Extensive evaluation of the proposed system shows that a position accuracy with a Root-Mean-Square Error (RMSE) of 0.20cm can be obtained. The orientation angle can be estimated with an RMSE of 1.93°.}, language = {en} } @phdthesis{Tzschichholz2014, author = {Tzschichholz, Tristan}, title = {Relative pose estimation of known rigid objects using a novel approach to high-level PMD-/CCD- sensor data fusion with regard to applications in space}, isbn = {978-3-923959-95-2}, issn = {1868-7474}, doi = {10.25972/OPUS-10391}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-103918}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2014}, abstract = {In this work, a novel method for estimating the relative pose of a known object is presented, which relies on an application-specific data fusion process. A PMD-sensor in conjunction with a CCD-sensor is used to perform the pose estimation. Furthermore, the work provides a method for extending the measurement range of the PMD sensor along with the necessary calibration methodology. Finally, extensive measurements on a very accurate Rendezvous and Docking testbed are made to evaluate the performance, what includes a detailed discussion of lighting conditions.}, subject = {Bildverarbeitung}, language = {en} }