Research Article
The Optimal Sampling Period of a Fingerprint Positioning Algorithm for Vehicle Speed Estimation
Table 5
Performance metrics.
| | Absolute error rate (AER) | The error rate with the actual speed under the different sampling period. The formula (*) is shown below:
(*) | | Relative error ratio (RER) | The AER with different sampling periods which is compared to the AER′. The formula (**) is shown:
(**) | | Cost (C) | The total data needed for speed estimation. | | Relative cost ratio (RCR) | The total data needed for speed estimation which is compared to the optimal sampling period. |
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