Title :
Design of frequency invariant response array based on steepest-descent algorithm
Author :
Zhiwei, Wang ; Dacheng, Wang ; Wenshuai, Liu
Author_Institution :
Coll. of Underwater Acoust. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
The design of the frequency invariant response array is formulated as an unconstrained optimization problem in this paper. The correlative objective function is presented based on the expression to describe the difference between actual and scheduled spatial response of the array. A new arithmetic is proposed to obtain the frequency invariant weight vectors by applying the steepest-descent algorithm. Computer simulations for uniform linear array and circular array have verified that the new method has high convergence precision and can be applied to arbitrary array without restriction on element patterns.
Keywords :
array signal processing; correlation methods; frequency response; gradient methods; circular array; computer simulation; convergence precision; correlative objective function; frequency invariant response array; spatial response; steepest descent algorithm; unconstrained optimization problem; uniform linear array; Algorithm design and analysis; Arrays; Convergence; Presses; Sensors; Signal processing algorithms; Vectors; Computer simulation; Frequency invariant response array; Steepest-descent algorithm; weight vectors;
Conference_Titel :
Information and Automation (ICIA), 2011 IEEE International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4577-0268-6
Electronic_ISBN :
978-1-4577-0269-3
DOI :
10.1109/ICINFA.2011.5949049
