Title :
On the performance of constrained adaptive algorithms for combined beamforming and AOA tracking of a moving target
Author :
De Castro, Roberto Mouzinho ; Dias, Maurício Henrique Costa ; Apolinario, J.A.
Author_Institution :
Inst. Militar de Engenharia, Rio de Janeiro, Brazil
Abstract :
In this paper, we investigate the performance of constrained adaptive algorithms in a beamforming system that is also responsible for the estimation of the angle-of-arrival (AOA) of a moving source. The merits of a number of linearly constrained adaptive algorithms are verified in an assumed far-field condition: the constrained least mean square (CLMS) algorithm, the constrained affine projection algorithm (CAPA), the constrained conjugate gradient (CCG) algorithm, and the constrained recursive least square (CRLS) algorithm. In order to have a more suitable scenario for the simulations, a fixed AOA estimation method is used and a moving target model is proposed and tested in our experiments.
Keywords :
array signal processing; conjugate gradient methods; direction-of-arrival estimation; least mean squares methods; target tracking; AOA tracking; angle-of-arrival; beamforming; constrained adaptive algorithms; constrained affine projection algorithm; constrained conjugate gradient algorithm; constrained least mean square algorithm; constrained recursive least square algorithm; moving target; Adaptive algorithm; Antenna arrays; Array signal processing; Directive antennas; Least squares methods; Maximum likelihood estimation; Projection algorithms; Target tracking; Testing; Traffic control;
Conference_Titel :
Microwave and Optoelectronics, 2005 SBMO/IEEE MTT-S International Conference on
Print_ISBN :
0-7803-9341-4
DOI :
10.1109/IMOC.2005.1579998
