A Novel DOA Estimation Algorithm Using Array Rotation Technique
| Autor: | Joel J. P. C. Rodrigues, Liangtian Wan, Xiaoyu Lan, Guangjie Han |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Energy loss
lcsh:T58.5-58.64 lcsh:Information technology Computer Networks and Communications Computer science Array aperture Direction of arrival multiple signal classification (MUSIC) spatial spectrum estimation Reduction (complexity) Circular buffer Sensor array Antenna (radio) array rotation Algorithm Rotation (mathematics) irection of arrival (DOA) estimation |
| Zdroj: | Future Internet Volume 6 Issue 1 Pages 155-170 Future Internet, Vol 6, Iss 1, Pp 155-170 (2014) |
| ISSN: | 1999-5903 |
| DOI: | 10.3390/fi6010155 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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