半球共形阵列的两种虚拟变换方式性能对比

doi:10.3969/j.issn.1001-2400.2014.03.006

Abstract

Abstract:

The spatial steering vector of the conformal array usually does not have a Vandermonde structure, so that some fast high-resolution spatial-spectrum estimation methods which are suitable for uniform linear arrays or plane arrays cannot be directly applied to the conformal arrays. This paper adopts the idea of array manifold interpolation transformation and establishes two different transformation relations from a hemisphere conformal array to a rectangular array and a cross array, respectively. Then we comparatively study the performance of the virtual rectangular array and the virtual cross array on DOA (Direction of Arrival) estimation, adaptive beamforming and computational complexity. The applicable conditions of two kinds of virtual arrays are clearly confirmed by theoretical analysis and extensive simulation, and results of this paper can provide a reference for the engineering applications of conformal arrays.

Key words: conformal array, virtual interpolation, direction of arrival estimation, beamforming

ZHANG Xuejing;YANG Zhiwei;LIAO Guisheng. Performance comparison between two different virtual transformations of the hemisphere conformal array[J].J4, 2014, 41(3): 33-40.

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Performance comparison between two different virtual transformations of the hemisphere conformal array

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