An L-shaped array for estimating 2-D directions of wave arrival

An L-shaped array for estimating 2-D directions of wave arrival

A simple structured 2-D array, the L-shaped array, is presented. The L-shaped array consists of two uniform linear arrays (ULA) connected orthogonally at one end of each ULA. It is shown that the Cramer-Rao bounds (CRB) of the estimated wave directions based on the L-shaped array are about 37% small...

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Veröffentlicht in:IEEE transactions on antennas and propagation 1991-02, Vol.39 (2), p.143-146
Hauptverfasser: Hua, Y., Sarkar, T.K., Weiner, D.D.
Format: Artikel
Sprache:eng
Schlagworte:
Algorithm design and analysis
Analysis of variance
Antenna arrays
Direction of arrival estimation
Maximum likelihood estimation
Noise level
Sensor arrays
Sensor systems
Sparse matrices
Two dimensional displays
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Zusammenfassung:A simple structured 2-D array, the L-shaped array, is presented. The L-shaped array consists of two uniform linear arrays (ULA) connected orthogonally at one end of each ULA. It is shown that the Cramer-Rao bounds (CRB) of the estimated wave directions based on the L-shaped array are about 37% smaller than those for the cross array. The CRB indicates the accuracy potential because it is the (reachable) lower bound on the variance of any unbiased estimate. An efficient maximum likelihood algorithm is developed utilizing the ULA structure inherent in the L-shaped array.< >
ISSN:0018-926X
1558-2221
DOI:10.1109/8.68174