We describe a theoretical formulation allowing optimization of phased-array beam patterns in the presence of missing elements. 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 on-line implementation.
|Original language||English (US)|
|Number of pages||5|
|Journal||Proceedings - IEEE Ultrasonics Symposium|
|State||Published - 1991|
|Event||1991 IEEE Ultrasonics Symposium. ULTSYM 1991 - Orlando, United States|
Duration: Dec 8 1991 → Dec 11 1991
Bibliographical noteFunding Information:
Acknowledgement Simulations presented in this paper were performed on Cray-YMP at the University of Illinois under grant number ECS870001 from the National Center for Supercomputing Applications (NCSA).
© 1991 IEEE.