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Wavelet-Inspired Root-MUSIC Using Symmetric Sparse Linear Array
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DOI：10.1049/ell2.70491.png)
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Abstract
En 中文
Sparse arrays can increase the array aperture, thereby enhancing angular resolution. However, this also introduces additional computational complexity. This letter proposes a symmetric sparse array structure, where subarrays with different inter-element spacings sample distinct spatial domain signals, analogous to the use of mother wavelets at different scales in wavelet theory to process various frequency components of a signal. The root-MUSIC method can be directly applied to the proposed method, and the simulations demonstrate that it achieves direction-of-arrival estimation performance comparable to that of super-nested arrays while maintaining lower computational complexity.
Keywords:
DOA estimation
Sparse array
wavelet-inspired
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