Research Article

Design and Implementation of Directional Sensors for Privacy-Ensured Device-Free Target Localization in Indoor Environment

Figure 2

(a) Localization experiment environment. (b) Single microstrip antenna attached with USRP. (c) Linear array of microstrip antennas attached with USRP. (d) Monopole antenna attached with USRP.
(a)
(b)
(c)
(d)