ETH - Indoor Positioning & Indoor Navigation


08:15 - 08:45	Jörg Blankenbach (presenting author), Abdelmoumen Norrdine: Position Estimation Using Artificial Generated Magnetic Fields In this abstract a system is introduced which overcomes the limitations of existing indoor positioning systems by the use of artificial quasi static magnetic fields. The proposed DC magnetic signals show no special multipath effects and have excellent characteristics for penetrating various obstacles. In this contribution the theory of coil-based magnetic fields as well as the basic function principle of the positioning system are described. Furthermore, a prototype that is currently under development is presented. This includes the hardware components, the network and software architectures of the entire system as well as the algorithms for the position and orientation estimation. In addition, the results of first test measurements and the system’s calibration in real indoor environments are shown.

08:45 - 09:15	Shuang Song, Chao Hu (presenting author), Mao Li, Wanan Yang and Max Q.-H Meng: Multi-targets’ Localization and Orientation Algorithm To track the movement of multi-targets, a magnetic localization and orientation system is designed. In this system permanent magnets are used as the targets. With the magnetic sensor array, the magnets’ magnetic signals can be measured, and the targets’ 3D localization and 2D orientation parameters can be computed by an appropriate nonlinear minimization algorithm, e.g. Levenberg-Marquardt (LM) Algorithm. The experimental results show that this system has satisfactory accuracy, high execution speed and high robustness.

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