CORRELATION-BASED ABERRATION CORRECTION IN THE PRESENCE OF INOPERABLE ELEMENTS

被引：36
|
作者：
ODONNELL, M [1 ]
ENGELER, WE [1 ]
机构：
[1] GE,CTR CORP RES & DEV,SCHENECTADY,NY 12301
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1992年 / 39卷 / 06期
关键词：
D O I：
10.1109/58.165554
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Estimation of phase aberrations using correlation processing between neighboring elements in a phased array is explored in the presence of inoperable elements. Using a CORDIC based implementation of a complex baseband correlator, inactive elements can be identified simultaneous with correlation processing. Following detection of inoperable elements, a simple rerouting of the adaptive beam former is used to eliminate these elements from correlation analysis. Experimental results on a 3.33 MHz, 64-element array system with four contiguous, inactive elements demonstrate the robustness of the simple rerouting method for accurate phase aberration estimation.
引用
收藏
页码：700 / 707
页数：8
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