Estimating noise at one frequency by sampling noise at other frequencies
US7933741B2 · kind B2 · utility
3Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2009 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Aug 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/083
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest is obtained. Noise measurements of S(t) at one or more noise frequencies where the Signal portion of S(t) is expected to be small are obtained. The noise at the frequency-of-interest is estimated using the noise measurements at the one or more noise frequencies. The estimated noise is subtracted from the measurement of S(t) at the frequency-of-interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.