Broadband adaptive doppler estimator and canceller
US5130952A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/904
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A broadband adaptive Doppler estimator and canceller is described for adaptively removing a moving source of near field primary interference that is masking a weaker target. The estimator and canceller employs a distributed field of sensors, through which is moving the source of interference. The estimator and canceller takes the form of a canceller system, wherein the measured reference waveform is a Doppler shifted version of the interference. The estimator and canceller employ interpolating and decimating of the reference waveform to remove Doppler effects over a broadband. The interpolation is performed by oversampling (zero padding) and low pass filtering, and the decimation is a sample rate reduction. The adaption is performed in the decimation to minimize mean square error in the canceller output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.