Publications

Journals and conferences (peer-reviewed)

• Alexander Ens, Fabian Höflinger, Johannes Wendeberg, Joachim Hoppe, Rui Zhang, Amir Bannoura, Leonhard Reindl, and Christian Schindelhauer. Acoustic Self-Calibrating System for Indoor Smart Phone Tracking. International Journal of Navigation and Observation, 2015. (pdf, doi)
• Nikolas Simon, Joan Bordoy, Fabian Höflinger, Johannes Wendeberg, Marc Schink, Robert Tannhäuser, Leonhard Reindl, and Christian Schindelhauer. Indoor Localization System for Emergency Responders with Ultra Low-power Radio Landmarks. In Proceedings of 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2015. (pdf, doi)
• Alexander Ens, Joan Bordoy, Johannes Wendeberg, Leonhard Reindl, and Christian Schindelhauer. Unsynchronized Ultrasound System for TDOA Localization. In Proceedings of 2014 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2014. (pdf, doi)
• Johannes Wendeberg and Christian Schindelhauer. Polynomial-Time Approximation Algorithms for Anchor-free TDoA Localization. Theoretical Computer Science, 2014. (pdf, doi)
• Fabian Höflinger, Johannes Wendeberg, Joachim Hoppe, Rui Zhang, Alexander Ens, Leonhard Reindl, and Christian Schindelhauer. Acoustic Indoor-Localization System for Smart Phones. In Proceedings of 11th International Multi-Conference on Systems, Signals & Devices (SSD), 2014. (pdf, doi)
• Joan Bordoy, Patrick Hornecker, Fabian Höflinger, Johannes Wendeberg, Rui Zhang, Christian Schindelhauer, and Leonhard Reindl. Robust Tracking of a Mobile Receiver using Unsynchronized Time Differences of Arrival. In Proceedings of 2013 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2013. (pdf, doi)
• Alexander Ens, Fabian Höflinger, Johannes Wendeberg, Leonhard Reindl, and Christian Schindelhauer. Indoor Positioning using Ultrasonic Waves with CSS and FSK Modulation for Narrow Band Channel. In Proceedings of 2013 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2013. (poster paper)
• Simon Burgess, Yubin Kuang, Johannes Wendeberg, Kalle Åström, and Christian Schindelhauer. Minimal Solvers for Unsynchronized TDOA Sensor Network Calibration. In Proceedings of 9th International Symposium on Algorithms and Experiments for Sensor Systems, Wireless Networks and Distributed Robotics (ALGOSENSORS), 2013. (pdf, doi)
• Johannes Wendeberg, Fabian Höflinger, Christian Schindelhauer, and Leonhard Reindl. Calibration-Free TDOA Self-Localization. Journal of Location Based Services, 2013. (pdf, doi, video)
• Johannes Wendeberg, Jörg Müller, Christian Schindelhauer, and Wolfram Burgard. Robust Tracking of a Mobile Beacon using Time Differences of Arrival with Simultaneous Calibration of Receiver Positions. In Proceedings of 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2012. (pdf, doi, video)
• Fabian Höflinger, Johannes Wendeberg, Rui Zhang, Manuel Bührer, Joachim Hoppe, Amir Bannoura, Leonhard M. Reindl, and Christian Schindelhauer. Acoustic Self-calibrating System for Indoor Smartphone Tracking (ASSIST). In Proceedings of 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2012. (pdf, doi)
• Johannes Wendeberg and Christian Schindelhauer. Polynomial Time Approximation Algorithms for Localization 
  based on Unknown Signals. In Proceedings of 8th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities (ALGOSENSORS), 2012. (pdf, doi)
• Johannes Wendeberg, Thomas Janson, and Christian Schindelhauer. Self-Localization based on Ambient Signals, Theoretical Computer Science, vol. 453, pp. 98–109, 2012. (pdf, doi)
• Johannes Wendeberg, Fabian Höflinger, Christian Schindelhauer, and Leonhard Reindl. Anchor-free TDOA Self-Localization. In Proceedings of 2011 International Conference on Indoor Positioning and Indoor Navigation 
  (IPIN), 2011. (pdf, short paper, doi, video)
• Christian Schindelhauer, Zvi Lotker, and Johannes Wendeberg. Network Synchronization and Localization Based on Stolen Signals. In Proceedings of 18th International Colloquium on Structural Information and Communication Complexity (SIROCCO), 2011. (pdf, doi)
• Christian Schindelhauer, Zvi Lotker, and Johannes Wendeberg. Brief Announcement: Network Synchronization and Localization Based on Stolen Signals. In Proceedings of 30th Annual ACM SIGACT-SIGOPS Symposium on Principles 
  of Distributed Computing (PODC), 2011. (pdf, doi)
• Thomas Janson, Christian Schindelhauer, and Johannes Wendeberg. Self-Localization Application for iPhone using only Ambient Sound Signals. In Proceedings of 2010 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2010. (pdf, extended abstract, doi)
• Thomas Janson, Christian Schindelhauer, and Johannes Wendeberg. Self-localization Based on Ambient Signals. 
  In Proceedings of 6th International Workshop on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities (ALGOSENSORS), 2010. (pdf, doi)

Other contributions

• Christian Schindelhauer and Johannes Wendeberg. Polynomial Time Approximation Algorithms for Localization based on Unknown Signals. In Proceedings of 16. Internationaler Kongress für Sensoren und Messtechnik (SENSOR 2013), May 2013. (pdf, doi)
• Alexander Ens, Fabian Höflinger, Thomas Janson, Johannes Wendeberg, Leonhard Reindl, and Christian Schindelhauer.
  eCULTS: energy autarctic Configuration-free Ultrasonic Tracking System. MicroTEC Südwest Clusterkonferenz Stuttgart, April 2013. (poster)
• Johannes Wendeberg and Christian Schindelhauer. Configuration-free Ultrasound Tracking System using Time Differences of Arrival. MicRO Alliance Meeting, University of Freiburg, June 2012. (poster)
• Johannes Wendeberg. Algorithms for Anchor-free Localization. In Proceedings of 2012 Joint Workshop of the German Research Training Groups in Computer Science, Dagstuhl castle, June 2012.
• Johannes Wendeberg, Fabian Höflinger, and Christian Schindelhauer. Konfigurationsfreies Ultraschall-Ortungssystem zum Tracking beweglicher Objekte. FAM-Workshop Navigation und Lokalisierung, Department of Microsystems Engineering (IMTEK), University of Freiburg, May 2011. (presentation)
• Johannes Wendeberg and Christian Schindelhauer. TDOA Self-Localization based on Ambient Sound Signals. In Proceedings of Nagoya University / University of Freiburg International Workshop, 2010. (abstract, poster)
• Christian Schindelhauer and Johannes Wendeberg. Localization Solely based on Ambient Signals. Technical Report
  Nr. 261, University of Freiburg, 2010. (pdf)

Theses

• Johannes Wendeberg. Calibration-Free Localization using Time Differences of Arrival. PhD thesis, University of Freiburg, 2013. (pdf, freidok)
• Johannes Wendeberg. Laufzeitbasierte Schallortung mit unbekannten Sender- und Empfängerpositionen. Master thesis, University of Freiburg, 2009. (pdf)
• Julian Bader, Benjamin Ummenhofer, and Johannes Wendeberg. HapticBillard − Physikalisch basierte 3D-Billardsimulation mit haptischer Interaktion. Team project, University of Freiburg, 2009. (pdf, sourceforge) 
• Johannes Wendeberg. Simulation zur Lokalisation von Schallquellen mit variabler Mikrofonanzahl. Bachelor thesis, University of Freiburg, 2007. (pdf)