计算机工程 ›› 2012, Vol. 38 ›› Issue (17): 249-253.doi: 10.3969/j.issn.1000-3428.2012.17.067

• 工程应用技术与实现 • 上一篇    下一篇

基于微多普勒分析的直升机旋翼参数估计

陈广锋1,2,张林让2,刘高高2   

  1. (1. 西安文理学院数学与计算机工程学院,西安 710065; 2. 西安电子科技大学雷达信号处理国家重点实验室,西安 710071)
  • 收稿日期:2011-11-29 修回日期:2012-01-27 出版日期:2012-09-05 发布日期:2012-09-03
  • 作者简介:陈广锋(1973-),男,副教授、博士研究生,主研方向:雷达信号处理,算子理论;张林让,教授、博士、博士生导师;刘高高,博士研究生
  • 基金项目:
    国家自然科学基金资助项目(60672130);西安市科技计划基金资助项目(CXY1134WL08)

Parameter Estimation of Helicopter Blade Based on Micro-doppler Analysis

CHEN Guang-feng 1,2, ZHANG Lin-rang 2, LIU Gao-gao 2   

  1. (1. School of Mathematical and Computer Engineering, Xi’an University of Arts and Science, Xi’an 710065, China; 2. National Key Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China)
  • Received:2011-11-29 Revised:2012-01-27 Online:2012-09-05 Published:2012-09-03

摘要: 针对直升机的分类和识别问题,提出一种利用微多普勒特征估计直升机旋翼参数的方法。建立单频信号下直升机旋翼微动模型和回波模型,定量分析直升机旋翼的微多普勒调制特征,及其与旋翼旋转速度、旋翼叶片长度和旋翼叶片片数之间的关系,利用平滑伪Wigner-Vill分布和图像处理相结合的方法提取微多普勒调制特征,估计直升机旋翼的相关微动参数。仿真结果证明了该方法的有效性。

关键词: 微动参数, 微多普勒分析, 旋转模型, 时频分析

Abstract: Aimed to classification and recognition of helicopter, a helicopter rotor parameters estimation method using micro-doppler characteri- stics is proposed. Motion dynamics and echo models of the blades of helicopter in single frequency are set up. The micro-doppler modula- tion of the blade, the relations of micro-doppler modulation and the rotational speed, the blade length and the number of blades are quantitatively analyzed. It extracts micro-doppler modulation and estimates those parameters methods by smoothed pseudo Wigner-Ville distribution and image processing. Simulation demonstrates the validity of the method.

Key words: micro-motion parameter, micro-Doppler analysis, rotation model, time-frequency analysis

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