Omni-directional person tracking on a flying robot using occlusion-robust ultra-wideband signals

We present a tracking system based on ultra-wideband (UWB) radio tranceivers mounted on a robot and a target. In comparison to typical UWB localization systems with fixed UWB tranceivers in the environment we only require instrumentation of the target with a single UWB tranceiver. Our system works in GPS-denied environments and does not suffer from long-term drift and limited fields of view. This paper reports the localization algorithm and implementation details. Additionally, we demonstrate a quantitative evaluation of the accuracy (10cm average position error for a square with side-length of 4m) and application scenarios with a quadrotor flying in close proximity to a person and handling occlusion of the target. Finally, we release our implementation as open-source software.

[1]  Bradford G. Nickerson.  Ultra Wideband Wireless Positioning Systems , 2014 .

[2]  Raffaello D'Andrea,et al.  A robot self-localization system using one-way ultra-wideband communication , 2015, 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[3]  G.B. Giannakis,et al.  Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks , 2005, IEEE Signal Processing Magazine.

[4]  Pascual Campoy Cervera,et al.  Computer vision based general object following for GPS-denied multirotor unmanned vehicles , 2014, 2014 American Control Conference.

[5]  Manfred Morari,et al.  Environment-independent formation flight for micro aerial vehicles , 2014, 2014 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[6]  Marc Pollefeys,et al.  Semi-direct EKF-based monocular visual-inertial odometry , 2015, 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[7]  Sudipta N. Sinha,et al.  Monocular Localization of a moving person onboard a Quadrotor MAV , 2015, 2015 IEEE International Conference on Robotics and Automation (ICRA).

[8]  W. Denham,et al.  Sequential estimation when measurement function nonlinearity is comparable to measurement error. , 1966 .

[9]  Georgios B. Giannakis,et al.  Ultra-wideband communications: an idea whose time has come , 2004, IEEE Signal Processing Magazine.

[10]  Baris Fidan,et al.  Localization Algorithms and Strategies for Wireless Sensor Networks: Monitoring and Surveillance Techniques for Target Tracking , 2009 .

[11]  Aníbal Ollero,et al.  Localization and mapping for aerial manipulation based on range-only measurements and visual markers , 2014, 2014 IEEE International Conference on Robotics and Automation (ICRA).

[12]  Aníbal Ollero,et al.  Decentralized simultaneous localization and mapping for multiple aerial vehicles using range-only sensors , 2015, 2015 IEEE International Conference on Robotics and Automation (ICRA).