Nested 阵列宽带 LFM 信号二维DOA 估计

doi:10.12066/j.issn.1007-2861.2183

Abstract

Abstract:

Nested arrays have garnered significant interest owing to their large array apertures and more degrees of freedom. However, most studies have been focused on direction-of-arrival (DOA) estimation of narrow-band and stationary signals. Few studies have been conducted on wide-band signals, particularly nonstationary wide-band signals. In this paper, based on fractional Fourier transform and DOA matrix method, a two-dimensional angle measurement algorithm of nested array is proposed to accurately estimate the spatial DOA of wide-band linear-frequency-modulation signals without two-dimensional nonlinear search and parameter pairing. Simulation results confirm the superiority of the new algorithm.

Key words: Nested array, fractional Fourier transform (FrFT), matrix method, wide-band, direction-of-arrival (DOA)

CLC Number:

TN911.7

LI Xiaolin, ZHANG Wenjun. Two-dimensional DOA estimation for wideband LFM signals based on Nested arrays[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(4): 506-517.

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References 21

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Two-dimensional DOA estimation for wideband LFM signals based on Nested arrays

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