Robust Adaptive Beamforming based on Automatic Variable Loading in Array Antenna

IF 0.6 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Applied Computational Electromagnetics Society Journal Pub Date : 2021-08-19 DOI:10.47037/2021.aces.j.360713

Bin Yang, Wenxing Li, Yuanyuan Li, Y. Mao

引用次数: 3

Abstract

Diagonal loading technology is widely used in array antenna beamforming because of its simple method, low computational complexity and the ability to improve the robustness of beamformer. On this basis, this paper proposes a robust adaptive beamforming method based on automatic variable loading technology. The automatic variable loading matrix (AVLM) of the method is composed of two parts. The non-uniform loading matrix dominants when the input signal-to-noise ratio (SNR) is small, effectively control the influence of noise disturbance without affecting the ability of array antenna to suppress interference. The variable diagonal loading matrix dominants when the input SNR is high to improve the output performance of array antenna. Simulated results show that compared to other methods, the proposed method has better output performance for both low and high input SNR cases.

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基于自动变负载的阵列天线鲁棒自适应波束形成

对角加载技术以其方法简单、计算复杂度低、能提高波束形成器的鲁棒性等优点被广泛应用于阵列天线波束形成中。在此基础上，提出了一种基于自动变载荷技术的鲁棒自适应波束形成方法。该方法的自动变载荷矩阵(AVLM)由两部分组成。当输入信噪比较小时，非均匀加载矩阵占主导地位，在不影响阵列天线抑制干扰能力的情况下，有效地控制了噪声干扰的影响。当输入信噪比较高时，采用可变对角加载矩阵提高阵列天线的输出性能。仿真结果表明，与其他方法相比，该方法在低信噪比和高信噪比输入情况下都具有更好的输出性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Computational Electromagnetics Society Journal 工程技术-电信学

CiteScore

1.60

自引率

28.60%

发文量

审稿时长

9 months

期刊介绍： The ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state of the art, and to the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "re-invent the wheel" to solve a previously solved computational problem in electrical engineering, physics, or related fields of study. The ACES Journal welcomes original, previously unpublished papers, relating to applied computational electromagnetics. All papers are refereed. A unique feature of ACES Journal is the publication of unsuccessful efforts in applied computational electromagnetics. Publication of such material provides a means to discuss problem areas in electromagnetic modeling. Manuscripts representing an unsuccessful application or negative result in computational electromagnetics is considered for publication only if a reasonable expectation of success (and a reasonable effort) are reflected. The technical activities promoted by this publication include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution technique or in data input/output; identification of new applications for electromagnetics modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.