Title :
On the convergence of the estimated posterior density weighted algorithm
Author :
White, Langford B.
Author_Institution :
Defense Sci. Technol. Organ., Salisbury, SA, Australia
fDate :
1/1/1991 12:00:00 AM
Abstract :
Sufficient conditions are established for the convergence of the algorithm when applied to the problem of radar imaging as suggested by D.L. Snyder and H.J. Whitehouse (1985), and the problem of enhancement of nonstationary spectrum estimators based on L. Cohen´s (1966) class of time-frequency distributions, as proposed by L.B. White (1989). In the latter case, a regularization step must be included to ensure good behavior. The sufficient conditions may always be met in practice
Keywords :
convergence of numerical methods; picture processing; radar theory; signal processing; spectral analysis; convergence; estimated posterior density weighted algorithm; nonstationary spectrum estimators; radar imaging; regularization step; sufficient conditions; time-frequency distributions; Australia; Bismuth; Convergence; Convolution; Image reconstruction; Least squares methods; Radar imaging; Signal processing algorithms; Sufficient conditions; Tomography;
Journal_Title :
Signal Processing, IEEE Transactions on