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

Table 7

AER and RER for Case 1.

Sampling period (sec)	Absolute error rate (AER)	Relative error ratio (RER)
1	2.73%	4.88%
20	2.82%	1.74%
41.589	2.87%	0
60	3.06%	−6.62%
80	3.10%	−8.01%
100	3.24%	−12.89%
120	3.31%	−15.33%

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