Parameter estimation of undersampled signals by Wigner-Ville analysis
- 1 January 1991
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 15206149,p. 3253-3256 vol.5
- https://doi.org/10.1109/icassp.1991.150093
Abstract
A method based on computing the Wigner-Ville distribution is proposed for estimating the instantaneous frequency of undersampled signals whose instantaneous bandwidth is considerably smaller than the overall bandwidth. The approach is not parametric, i.e. the instantaneous frequency can be recovered, whatever its time variation law. The limits of applicability of the method depend on the relationship between the instantaneous bandwidth, the overall bandwidth, and the undersampling factor. The method is applicable to the high-resolution radar imaging of moving objects.Keywords
This publication has 2 references indexed in Scilit:
- Instantaneous bandwidth for signals and spectrogramPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A novel procedure for detecting and focusing moving objects with SAR based on the Wigner-Ville distributionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002