Design of two-dimensional recursive digital filters with specified magnitude and group delay characteristics

A technique is proposed for the design of two-dimensional (2-D) recursive filters with a response that best approximates, in the l_p sense, prescribed magnitude and group delay specifications. The filter stability is guaranteed through the use of a frequency transformation. The optimization techniqu...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems 1978-11, Vol.25 (11), p.908-916
Main Authors: Aly, S., Fahmy, M.
Format: Article
Language:English
Subjects:
Delay
Digital filters
Error analysis
Frequency
Hardware
Limit-cycles
Radar remote sensing
Roundoff errors
Stability
Two dimensional displays
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Summary:A technique is proposed for the design of two-dimensional (2-D) recursive filters with a response that best approximates, in the l_p sense, prescribed magnitude and group delay specifications. The filter stability is guaranteed through the use of a frequency transformation. The optimization technique used is that of Davidon-Fletcher and Powell. Several examples are given to illustrate the proposed algorithm.
ISSN:0098-4094
1558-1276
DOI:10.1109/TCS.1978.1084407