Method of detecting a useful signal affected by noise
US5337251A · kind A · utility
21Cited by
11References
19Claims
0Family size
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Inventor
Key dates
| Filing date | Feb 4, 1993 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In order to detect a useful signal affected by noise, a measurement is taken of the expected S/N ratio of this signal over a time slice, a measurement of the estimated white noise alone is taken over another time slice without useful signal, the mean energy of the noise and of the noise-affected signal is calculated, in each of their time slices, the theoretical detection threshold is calculated, the ratio of these two energies is calculated, and the ratio is compared with the calculated threshold, this threshold being greater than 1 (ideal threshold).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.