1. Chapter 15 - Principles and Techniques of RFID Positioning

2. Figure 15.1 Block diagram of an RFID positioning system

3. Figure 15.2 Ratio between the received power and the transmitted power

4. Figure 15.3 (a) Simulated RSS in Free space
Reader antenna z x y

5. Figure 15.3 (b) Simulated RSS in Metallic cabinet at the side
Reader antenna z x y

6. Figure 15.3 (c) Simulated RSS in Metallic cabinet at front
Reader antenna z x y

7. Figure 15.4 Tag positioning using trilateration
p1(x1,y1)
p2(x2,y2)
p3(x3,y3) d1 d2 d3
p (x,y)

8. Figure 15.5 Tag positioning using triangulation
p2(x2,y2)
p1(x1,y1) α
p (x,y) β D

9. Figure 15.6 Tag positioning using triangulation with more than two reader antennas
pM(xM,yM)
p1(x1,y1)
p (x,y) x y
p2(x2,y2)

10. Figure 15.7 Tag positioning based on direction and range information
p1(x1,y1) α
p (x,y) d