DocumentCode
3294373
Title
Compensation for missing array elements by direct beam synthesis
Author
Ebbini, Emad S. ; O´Donnell, Matthew
Author_Institution
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fYear
1991
fDate
8-11 Dec 1991
Firstpage
645
Abstract
A theoretical formulation allowing optimization of phased-array beam patterns in the presence of missing elements is described. The approach specifies the desired beam pattern at a set of control points (directions) in the focal plane covering both the main beam and sidelobes. Complex element weights (for either transmit or receive) are found as the vector with minimum norm (i.e. minimum energy) minimizing the square error between the realized and the specified beam patterns at the control points. The method lends itself to a robust efficient numerical calculation permitting online implementation
Keywords
acoustic arrays; acoustic signal processing; control points; focal plane; online implementation; phased-array beam patterns; robust efficient numerical calculation; Degradation; Error correction; Force control; Geometry; Gratings; Phased arrays; Pressure control; Robustness; Sampling methods; Velocity control;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location
Orlando, FL
Type
conf
DOI
10.1109/ULTSYM.1991.234242
Filename
234242
Link To Document