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

Figure 3

Localization experiment scenarios: (a) patch antenna without target; (b) linear array antenna without target; (c) single patch with target at 0°; (d) linear array with target at 0°; (e) single patch with target at 20°; (f) linear array with target at 20°.

(a)

(b)

(c)

(d)

(e)

(f)