AAV Parameters Estimation Based on Improved Time-Frequency Ridge Extraction and Hough Transform

IF 3.6 3区 计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS
Yongji Yu;Yonghong Ruan;Junjie Zhong
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引用次数: 0

Abstract

The micro-Doppler effect caused by the rotation of autonomous aerial vehicle (AAV) rotors plays a crucial role in AAV detection and identification, as it can reflect the micro-movement characteristics of the target, enabling the estimation of the blade length and rotation speed. However, existing methods are prone to noise interference and exhibit poor performance in extracting multi-rotor and multi-component signals. In this paper, we first construct a AAV rotor echo model for frequency-modulated radar systems and derive the mapping relationship between rotor parameters and micro-Doppler characteristic components. First-Order short-time Fourier transform synchrosqueezed transform (FSST) is proposed for extracting micro-Doppler features. Specifically, a novel AAV parameter estimation method is investigated, which is based on an improved time-frequency ridge extraction and Hough transform, following a detailed analysis of the micro-Doppler time-frequency spectrum. Finally, the effectiveness of the method is validated through experimental data. Compared to traditional methods, this approach improves the accuracy of multi-rotor, multi micro-Doppler signal parameter estimation.
基于改进时频脊提取和霍夫变换的AAV参数估计
自主飞行器(autonomous aerial vehicle, AAV)旋翼旋转引起的微多普勒效应在AAV的检测和识别中起着至关重要的作用,它可以反映目标的微运动特征,从而实现对叶片长度和转速的估计。然而,现有的方法容易受到噪声干扰,在提取多转子多分量信号时表现出较差的性能。本文首先建立了用于调频雷达系统的AAV旋翼回波模型,推导了旋翼参数与微多普勒特征分量之间的映射关系。提出了一阶短时傅里叶变换同步压缩变换(FSST)提取微多普勒特征的方法。在详细分析了微多普勒时频谱的基础上,研究了一种基于改进时频脊提取和霍夫变换的AAV参数估计方法。最后,通过实验数据验证了该方法的有效性。与传统方法相比,该方法提高了多转子、多微多普勒信号参数估计的精度。
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
IEEE Access
IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC
CiteScore
9.80
自引率
7.70%
发文量
6673
审稿时长
6 weeks
期刊介绍: IEEE Access® is a multidisciplinary, open access (OA), applications-oriented, all-electronic archival journal that continuously presents the results of original research or development across all of IEEE''s fields of interest. IEEE Access will publish articles that are of high interest to readers, original, technically correct, and clearly presented. Supported by author publication charges (APC), its hallmarks are a rapid peer review and publication process with open access to all readers. Unlike IEEE''s traditional Transactions or Journals, reviews are "binary", in that reviewers will either Accept or Reject an article in the form it is submitted in order to achieve rapid turnaround. Especially encouraged are submissions on: Multidisciplinary topics, or applications-oriented articles and negative results that do not fit within the scope of IEEE''s traditional journals. Practical articles discussing new experiments or measurement techniques, interesting solutions to engineering. Development of new or improved fabrication or manufacturing techniques. Reviews or survey articles of new or evolving fields oriented to assist others in understanding the new area.
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