Technical Program

Paper Detail

Paper:	SAM-P3.11
Session:	Beamforming and Space-Time Processing
Time:	Wednesday, May 17, 10:00 - 12:00
Presentation:	Poster
Topic:	Sensor Array and Multichannel Signal Processing: Adaptive beamforming and direction of arrival estimation
Title:	An Improved Partial Adaptive Narrow-Band Beamformer Using Concentric Ring Array
Authors:	Luis M Vicente, K. C. Ho, University of Missouri-Columbia, United States; Chiman Kwan, Intelligent Automation, Inc., United States
Abstract:	Partial adaptation is often used to reduce the computation and improve tracking ability of an adaptive array. In some practical situations, the received signal to be processed contains some interferences whose characteristics are known. The previously proposed partially adaptive concentric ring array is not able to utilize the prior information of known interferences without sacrificing the number of degrees of freedom, which will cause higher steady state error and smaller number of interferences that can be cancelled. We propose in this paper an improved partially adaptive concentric ring array that can utilize the prior knowledge to improve performance and maintain the same number of degrees of freedom. The proposed method designs the non-adaptive weights to remove the known interferences, and is shown to provide much faster convergence speed and lower steady state error than the original method.