[Retracted] Control Optimization Design of Radio Frequency Identification Technology in IoT Express Logistics Distribution System

Table 3

Influence of the phase shift threshold φ on the experimental results.

φ	Recognition rate (%)	Positioning error (m)
10°	81.7	0.98
30°	91.3	0.49
60°	94.7	0.36
90°	94.8	0.36
120°	94.8	0.37
150°	94.6	0.38
180°	77.3	0.83