Radar for tracer particles

Ott, Felix; Herminghaus, Stephan; Huang, Kai

doi:10.1063/1.4982942

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Radar for tracer particles

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Herminghaus, Stephan
Group Granular matter and irreversibility, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Zitation

Ott, F., Herminghaus, S., & Huang, K. (2017). Radar for tracer particles. Review of Scientific Instruments, 88(5): 051801. doi:10.1063/1.4982942.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-4586-2

Zusammenfassung

We introduce a radar system capable of tracking a 5 mm spherical target continuously in three dimensions. The 10 GHz (X-band) radar system has a transmission power of 1 W and operates in the near field of the horn antennae. By comparing the phase shift of the electromagnetic wave traveling through the free space with an IQ-mixer, we obtain the relative movement of the target with respect to the antennae. From the azimuth and inclination angles of the receiving antennae obtained in the calibration, we reconstruct the target trajectory in a three-dimensional Cartesian system. Finally, we test the tracking algorithm with target moving in circular as well as in pendulum motions and discuss the capability of the radar system.