Chapter 15 - Principles and Techniques of RFID Positioning

Figure 15.1 Block diagram of an RFID positioning system

Figure 15.2 Ratio between the received power and the transmitted power

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

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

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

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

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

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)

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