复合运动目标微多普勒特征的分析和提取

doi:10.3969/j.issn.1001-2400.2011.03.010

J4 ›› 2011, Vol. 38 ›› Issue (3): 55-62.doi: 10.3969/j.issn.1001-2400.2011.03.010

复合运动目标微多普勒特征的分析和提取

陈广锋^1,2；张林让¹；王纯¹；刘高高¹

(1. 西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071；
2. 西安文理学院数学系，陕西西安 710065)

收稿日期:2010-04-21 出版日期:2011-06-20 发布日期:2011-07-14
通讯作者: 陈广锋
作者简介:陈广锋(1973-)，男，副教授，西安电子科技大学博士研究生，E-mail: chgfeng@126.com．
基金资助:
国家自然科学基金资助项目(60672130)

Micro-Doppler feature analysis and extraction of the complex motion target

CHEN Guangfeng^1,2；ZHANG Linrang¹；WANG Chun¹；LIU Gaogao¹

(1. National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China|
2. Dept. of Mathematics, Xi'an Univ. of Arts and Science, Xi'an 710065， China)

Received:2010-04-21 Online:2011-06-20 Published:2011-07-14
Contact: CHEN Guangfeng

摘要/Abstract

摘要：

目标的微运动所产生的微多普勒特征包含了目标的运动和结构信息．针对目标微运动特征的复杂性和差异性，以无旋翼目标和有旋翼目标为背景，分别建立了具有平动、加速与振动特征的散射点模型和具有平动、加速、振动及旋转运动特征的散射点模型，分析了两种模型的微多普勒特征及其差异．通过仿真，采用平滑伪Winger-Ville时频分析方法，从雷达回波中提取了两种复合运动的微多普勒特征，结果与理论推导一致，从而验证了模型及其微多普勒理论分析的正确性．

关键词: 微多普勒, 复合运动, 振动, 旋转, 时频分析

Abstract:

Micro-Doppler signature produced by micro-motion contains movement and structure information which is useful for radar classification and recognition. Because of the complexity and difference of micro-motion, based on non-rotor targets and rotary-wing targets, the complex motion scattering point with translation, acceleration and vibration is modeled, so is complex motion scattering point with translation, vibration, acceleration and rotation. Then their micro-Doppler modulation and difference are analyzed. By simulation, the micro-Doppler modulation induced by the two models is extracted from the radar echo with the Smoothed pseudo Winger-Ville time-frequency analysis method, which agrees well with the computed results and proves that the models and the mathematical derivation of their micro-Doppler theoretical analysis are valid.

Key words: micro-Doppler, complex motion, vibration, rotation, time-frequency analysis

陈广锋；张林让；王纯；刘高高. 复合运动目标微多普勒特征的分析和提取[J]. J4, 2011, 38(3): 55-62.

CHEN Guangfeng；ZHANG Linrang；WANG Chun；LIU Gaogao. Micro-Doppler feature analysis and extraction of the complex motion target[J]. J4, 2011, 38(3): 55-62.

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复合运动目标微多普勒特征的分析和提取

Micro-Doppler feature analysis and extraction of the complex motion target

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