相控阵子阵级和差多波束测角方法

doi:10.3969/j.issn.1001-2400.2013.01.004

Abstract

Abstract:

For the problem of monopulse angle estimations of multiple targets based on the large phased array, a method for estimating bias angles using sum-difference multi-beamforming at the sub-array level is proposed. Firstly, system complexity is reduced by combining the outputs of sensors; secondly, sum-difference multiple beamformings are achieved by phased-alone sub-array steering vectors with the anti-symmetric mode; finally, the 2-dimensional bias angles of targets in arbitrary steering beams are estimated based on the two slopes along azimuth and elevation axes pointing to the normal. Compared with the method of four steering sum-difference beamforming, the proposed method has the advantages of higher accuracy and lower complexity. The measured and simulated data show the effectiveness and superiority of the proposed method.

Key words: monopulse angle estimation, sum-difference, multi-beamforming, sub-array processing

CLC Number:

TN911

ZENG Cao;CHEN Hao;HE Xuehui;YANG Yang. Monopulse angle estimation using sum-difference multi-beamforming based on the phased array at the sub-array level[J].J4, 2013, 40(1): 19-25+43.

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Monopulse angle estimation using sum-difference multi-beamforming based on the phased array at the sub-array level

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