The Optimal Sampling Period of a Fingerprint Positioning Algorithm for Vehicle Speed Estimation

Table 9

AER and RER for Case 2.

Sampling period (sec)	Absolute error rate (AER)	Relative error ratio (RER)
1	1.30%	2.99%
20	1.33%	0.75%
41.589	1.34%	0
60	1.39%	−3.37%
80	1.40%	−4.48%
100	1.41%	−5.22%
120	1.39%	−4.48%

Bold values refer that the optimal sampling period was 41.589 s. And we explain in Section 4.2.5.