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Range-angle pencil-beamforming for non-uniformly distributed array radar

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Abstract

Digital beamforming with non-uniformly distributed array radar can make full use of resources and enhance the target detection capability. However, it encounters severe grating lobes and high false alarm probability. In this paper, a novel range-angle pencil-beamforming with the non-uniformly distributed frequency diverse array (FDA) is proposed. FDA is referred to as an array transmitting linearly increased carrier frequencies with the array elements. The FDA is capable of providing controllable degrees-of-freedom in range domain, which is superior to the conventional phased array. In our approach, the frequency increments and element positions are optimally determined via particle swarm optimization algorithm to focus the transmit power within a particular range and angle region. With the proposed method, the range-angle pencil-beampattern is obtained and its side-lobes in range-angle domains can be further lowered down. Numerical simulation examples are provided to verify the effectiveness of the proposed approach.

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Authors and Affiliations

  1. National Laboratory of Radar Signal Processing, Xidian University, Xi’an, 710071, China

    Lan Lan, Guisheng Liao & Jingwei Xu

  2. School of Computer and Electrical Information, Guangxi University, Nanning, 530004, China

    Jun Wen

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  1. Lan Lan
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  2. Guisheng Liao
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  3. Jingwei Xu
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  4. Jun Wen
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Corresponding author

Correspondence to Lan Lan.

Additional information

This work was supported in part by the National Nature Science Foundation of China under Grants 61231017 and 61601339, the China Postdoctoral Science Foundation under Grant 2016M590925, and the Fundamental Research Funds for the Central Universities under Grants XJS16009 and JB160228.

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Lan, L., Liao, G., Xu, J. et al. Range-angle pencil-beamforming for non-uniformly distributed array radar. Multidim Syst Sign Process 29, 867–886 (2018). https://doi.org/10.1007/s11045-017-0477-9

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  • DOI: https://doi.org/10.1007/s11045-017-0477-9

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