CORRELATION-BASED ABERRATION CORRECTION IN THE PRESENCE OF INOPERABLE ELEMENTS

被引：37

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

页码：700 / 707

页数：8

共 18 条

[1]

FINK M, 1989 P IEEE ULTR S, P681

[2] PHASE-ABERRATION CORRECTION USING SIGNALS FROM POINT REFLECTORS AND DIFFUSE SCATTERERS - BASIC PRINCIPLES [J].