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A Low Energy Consumption DOA Estimation Approach for Conformal Array in Ultra-Wideband
Future Internet 2014, 6(1), 155-170; doi:10.3390/fi6010155
Article

A Novel DOA Estimation Algorithm Using Array Rotation Technique

1,* , 2
, 3
 and 4
Received: 2 December 2013; in revised form: 10 February 2014 / Accepted: 26 February 2014 / Published: 17 March 2014
(This article belongs to the Special Issue Green Communications and Networking)
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Abstract: The performance of traditional direction of arrival (DOA) estimation algorithm based on uniform circular array (UCA) is constrained by the array aperture. Furthermore, the array requires more antenna elements than targets, which will increase the size and weight of the device and cause higher energy loss. In order to solve these issues, a novel low energy algorithm utilizing array base-line rotation for multiple targets estimation is proposed. By rotating two elements and setting a fixed time delay, even the number of elements is selected to form a virtual UCA. Then, the received data of signals will be sampled at multiple positions, which improves the array elements utilization greatly. 2D-DOA estimation of the rotation array is accomplished via multiple signal classification (MUSIC) algorithms. Finally, the Cramer-Rao bound (CRB) is derived and simulation results verified the effectiveness of the proposed algorithm with high resolution and estimation accuracy performance. Besides, because of the significant reduction of array elements number, the array antennas system is much simpler and less complex than traditional array.
Keywords: irection of arrival (DOA) estimation; spatial spectrum estimation; multiple signal classification (MUSIC); array rotation irection of arrival (DOA) estimation; spatial spectrum estimation; multiple signal classification (MUSIC); array rotation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lan, X.; Wan, L.; Han, G.; Rodrigues, J.J.P.C. A Novel DOA Estimation Algorithm Using Array Rotation Technique. Future Internet 2014, 6, 155-170.

AMA Style

Lan X, Wan L, Han G, Rodrigues JJPC. A Novel DOA Estimation Algorithm Using Array Rotation Technique. Future Internet. 2014; 6(1):155-170.

Chicago/Turabian Style

Lan, Xiaoyu; Wan, Liangtian; Han, Guangjie; Rodrigues, Joel J.P.C. 2014. "A Novel DOA Estimation Algorithm Using Array Rotation Technique." Future Internet 6, no. 1: 155-170.


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