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May 7, 2026npj Wireless TechnologyOpen Access

Aliasing in near-field array ambiguity functions: a spatial frequency-domain framework

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Authors

GMGilles MonnoyerJLJérôme LouveauxLDLaurence Defraigne

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Overview

Develops a framework for understanding aliasing in near-field arrays, highlighting its implications for array design.

Key Points

  • The research aims to characterize and model aliasing structures in near-field (NF) ambiguity functions related to XL-arrays.
  • Developed a spatial-frequency analysis to model NF grating lobes as aliasing artifacts.
  • Derived closed-form expressions for aliasing-free regions in uniform linear and circular arrays.
  • Established guidelines for designing XL-arrays to operate safely within aliasing-free regions.
  • Identified fundamental origins of grating lobes in NF ambiguity functions.
  • Provided quantifiable metrics for grating lobe structures in array designs.
  • Linked NF principles to conventional far-field approaches, enhancing design accuracy.

Cite This Study

Monnoyer et al. (2026) studied this question.

synapsesocial.com/papers/69fc2b608b49bacb8b34784dhttps://doi.org/10.1038/s44459-026-00043-0
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