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Proposed smart-sensor frequency estimation of a periodic signal contaminated with white noise and its 2nd, 3rd, and (3rd + 5th) harmonics for a SHNR = 15.2 dB.
| Signal + white noise and harmonic | Frequency estimation (Hz) | Error (Hz) | ||
|---|---|---|---|---|
| Mean (μ) | Standard deviation (σ) | Mean (μ) | Standard deviation (σ) | |
| 2nd | 60.0002 | 0.0042 | 0.0002 | 0.0042 |
| 3rd | 59.9996 | 0.0032 | 0.0004 | 0.0032 |
| 3rd + 5th | 59.9999 | 0.0038 | 0.0001 | 0.0038 |
