Sequences design using orthogonal polynomials to mitigate side-lobes for MIMO radar and SAR imaging application

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-02-20 DOI:10.1016/j.aeue.2025.155724

Ankur Thakur , Naman Garg , Anshu Thakur , Davinder Singh Saini

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引用次数: 0

Abstract

Transmit radar sequences are designed for side-lobes mitigation in multiple-input multiple-output (MIMO) radar systems. This paper uses orthogonal polynomials to design sequences by varying the optimizing parameter

γ

to achieve significant bandwidth and minimal side-lobes simultaneously. Those polynomial orders are chosen which provide the wider bandwidth at optimal

γ

value. The value of

γ

has to be optimized for higher side-lobes reduction. In MIMO radar, the proposed Chebyshev orthogonal polynomial (COP) and Legendre orthogonal polynomial (LOP) sequences are analyzed with different numbers of transmitting antennas to mitigate peak side-lobe levels (PSL) and cross-correlation side-lobe levels (CCSL). Further, the least square estimate (LSE) and Capon estimate (CE) techniques are used to analyze the performance of the designed sequences for synthetic aperture radar (SAR) imaging applications. The proposed sequences effectiveness is compared to the counterpart methods for validation purposes.

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利用正交多项式设计序列，以减少多输入多输出雷达和合成孔径雷达成像应用中的边叶现象

针对多输入多输出（MIMO）雷达系统的侧瓣抑制问题，设计了发射雷达序列。本文采用正交多项式设计序列，通过改变优化参数γ来同时获得显著的带宽和最小的旁瓣。选择在最佳γ值下提供更宽带宽的多项式阶数。γ的值必须优化，以获得更高的侧叶减少。在MIMO雷达中，采用不同发射天线数对所提出的Chebyshev正交多项式（COP）和Legendre正交多项式（LOP）序列进行了分析，以降低峰值旁瓣电平（PSL）和互相关旁瓣电平（CCSL）。在此基础上，利用最小二乘估计（LSE）和Capon估计（CE）技术分析了所设计序列在合成孔径雷达（SAR）成像中的性能。为了验证目的，将提出的序列有效性与相应的方法进行比较。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.