Multipath Tracking of On-Body Tag in Linear and Spin Motions

In this paper, we present the multipath tracking results of an on-body tag in linear and spin motions. We use an ultra-wideband (UWB) off-the-shelf Decawave kit for channel impulse response (CIR) acquisition, where a two-antenna anchor is fixed in space and a single-antenna tag is placed on a person’s chest. The multipath is extracted from the CIR at each snapshot by non-super-resolution CLEAN algorithm, and the extracted multipaths are tracked during the body movement. Two types of body motions are considered: translational linear movement and rotational spin movement. Both line-of-sight (LOS) and Non-LOS (NLOS) scenarios are incorporated. The results show that the multipaths’ track could well resemble the ground truth, and this observation is instructive for localizing on-body tag in NLOS scenarios with the assistance of, e.g., IMU.