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. Author manuscript; available in PMC: 2014 Nov 20.
Published in final edited form as: IEEE Trans Biomed Eng. 2014 Apr 23;61(9):2434–2443. doi: 10.1109/TBME.2014.2319333

Fig. 7.

Fig. 7

Angle θ and φ affect the walking speed estimated by the radar: (a) θ estimation: walk paths (dash line: fitting line) and radar beam projected on the ground plane (red), (b) φ estimation and experiment setup, and (c) cosφ as a time variant parameter.