Method and apparatus for supressing noise in a doppler system
US7421377B2 · kind B2 · utility
6Cited by
5References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Nov 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8979
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Present application provides a method for suppressing noise in a spectral Doppler system, comprising the steps of: obtaining a power spectrum of Doppler signals demodulated in the spectral Doppler system, by performing spectral analysis on the Doppler signals; estimating an average noise power of the spectral Doppler system; designing a noise suppression filter by determining its filter coefficients based on the power spectrum of the Doppler signals and the estimated average noise power; filtering the Doppler signals by using the designed noise suppression filter so as to reduce the noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.