A generalized Cramer-Rao lower bound for moving arrays

被引：3
|
作者：
Sullivan, Edmund J. [1 ]
机构：
[1] EJS Associates, Portsmouth, RI 02871 USA
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2009年 / 125卷 / 02期
关键词：
Pressure sensors;
D O I：
10.1121/1.3040020
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
By properly including the forward motion of the array in the signal model, improved bearing estimation performance for a towed line array can be obtained. The improvement is a consequence of utilizing the bearing information contained in the Doppler. In this paper, it is shown by use of the Cramer-Rao lower bound that, as the array moves forward, the variance on the bearing estimate for an array of pressure sensors decreases, and that if an array of pressure-vector sensors is used, a significant improvement over that obtained for the array using pressure sensors only is obtained. (C) 2009 Acoustical Society of America
引用
收藏
页码：EL51 / EL57
页数：7
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