Two-mean level-crossing time interval estimation method
US7133791B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jun 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
N-sample level-crossing estimator methods and devices are provided that extract more information from given time samples than the current two-sample approach and that are more resistant to interference from noises. The two-mean level-crossing time-interval estimation method extracts more information from given time samples than existing methods, advantageously estimates a level-crossing time interval with a limited number of time samples and is quieter than current noisy estimation techniques. The two-mean level crossing time-interval estimation method for N-sample estimation uses all N time samples by calculating the mean value of the first N/2 time samples and subtracting it by the second N/2 time sample to average out the noises in time samples. The two-mean level crossing time-interval estimation method can be implemented by using a Finite Impulse Response filter to take level-crossing time samples as inputs, take the differential level-crossing time samples as inputs, or take the N/2-step differential level-crossing time-interval as an input. An addition only one-step differential level-crossing time-interval estimator device and a one-step differential level-crossing time-int…
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