Fast implementation of two-dimensional APES and CAPON spectral estimators

Author

Larsson, Erik G. ; Stoica, Petre

Author_Institution

Dept. of Syst. & Control, Uppsala Univ., Sweden

Volume

5

fYear

2001

fDate

2001

Firstpage

3069

Abstract

The matched-filterbank spectral estimators APES and CAPON have received considerable attention in a number of applications. Unfortunately, their computational complexity tends to limit their usage in several cases-a problem that has previously been addressed by different authors. In this paper, we introduce a novel method to the computation of the 1D and 2D APES and CAPON spectra, which is considerably faster than all existing techniques. Numerical examples are provided to demonstrate the application of APES to synthetic aperture radar (SAR) imaging, and to illustrate the reduction in computational complexity provided by our implementation

Keywords

channel bank filters; computational complexity; filtering theory; matched filters; parameter estimation; radar imaging; spectral analysis; synthetic aperture radar; 1D APES spectra; 1D CAPON spectra; 2D APES spectral estimator; 2D Capon spectral estimator; SAR imaging; computational complexity reduction; fast implementation; matched-filterbank spectral estimators; synthetic aperture radar; two-dimensional APES spectral estimator; Amplitude estimation; Computational complexity; Computer applications; Control systems; Costs; Covariance matrix; Filters; Stability; Stacking; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.940306

Filename

940306