Efficient mixed-spectrum estimation with applications to target feature extraction
- 1 February 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Signal Processing
- Vol. 44 (2) , 281-295
- https://doi.org/10.1109/78.485924
Abstract
We present a decoupled parameter estimation (DPE) algorithm for estimating sinusoidal parameters from both 1-D and 2-D data sequences corrupted by autoregressive (AR) noise. In the first step of the DPE algorithm, we use a relaxation (RELAX) algorithm that requires simple fast Fourier transforms (FFTs) to obtain the estimates of the sinusoidal parameters. We describe how the RELAX algorithm may be used to extract radar target features from both 1-D and 2-D data sequences. In the second step of the DPE algorithm, a linear least-squares approach is used to estimate the AR noise parameters. The DPE algorithm is both conceptually and computationally simple. The algorithm not only provides excellent estimation performance under the model assumptions, in which case the estimates obtained with the DPE algorithm are asymptotically statistically efficient, but is also robust to mismodeling errors.Keywords
This publication has 16 references indexed in Scilit:
- A fast spectral estimation algorithm based on the FFTIEEE Transactions on Signal Processing, 1994
- Maximum-likelihood estimation of complex sinusoids and Toeplitz covariancesIEEE Transactions on Signal Processing, 1994
- Maximum likelihood estimation of signals in autoregressive noiseIEEE Transactions on Signal Processing, 1994
- Statistical analysis of two nonlinear least-squares estimators of sine-wave parameters in the colored-noise caseCircuits, Systems, and Signal Processing, 1989
- Maximum likelihood estimation of the parameters of multiple sinusoids from noisy measurementsIEEE Transactions on Acoustics, Speech, and Signal Processing, 1989
- Maximum likelihood localization of multiple sources by alternating projectionIEEE Transactions on Acoustics, Speech, and Signal Processing, 1988
- Reduction of sidelobe and speckle artifacts in microwave imaging: the CLEAN techniqueIEEE Transactions on Antennas and Propagation, 1988
- Model-structure selection by cross-validationInternational Journal of Control, 1986
- Estimating the dimension of a linear systemJournal of Multivariate Analysis, 1981
- Spectrum analysis—A modern perspectiveProceedings of the IEEE, 1981