计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (34): 122-124.

• 数据库、信号与信息处理 • 上一篇    下一篇

目标运动参数快速估计新方法

冯维婷,张宝军   

  1. 西安邮电学院 电子工程学院,西安 710121
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-01 发布日期:2011-12-01

New methods for fast estimation of target’s motion parameter

FENG Weiting,ZHANG Baojun   

  1. School of Electronic and Engineering,Xi’an University of Post and Telecommunications,Xi’an 710121,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-01 Published:2011-12-01

摘要: 提出了一种CW雷达目标运动参数测量的新方法,利用CW雷达目标回波信号构造出两个单一频率的正弦信号,?每个正弦信号的频率正好与目标的一个运动参数成正比,基于FFT和细化频谱的Chirp-Z变换得到运动参数估计值。该方法与现有方法相比,既没有使用时频分析工具等耗时的处理,也没有进行参数迭代处理,因此,运算复杂度低,运算量小,同时避免了估计误差传递。仿真实验结果表明了该方法的正确性。

关键词: 连续波雷达, 运动参数, 快速傅里叶变换, 频谱细化

Abstract: A new method of motion parameter estimation for Constant Wave(CW) radar is addressed.The echo signal of CW radar is separated into two sine signals by a novel signal transform,and the frequency of each sine signal is due to one of motion parameter for target.Moreover,this method takes advantage of the frequency estimation algorithm based on Chirp-Z transform and Fast Fourier Transform(FFT).Compared with other methods,due to without complex processing such as time-frequency analyzing and two-dimension searching,and without iterative processing,the proposed algorithm costs less runtime and avoids error passing.The validity of this method is shown in the simulation?results.

Key words: Constant Wave(CW) radar, motion parameter, Fast Fourier Transform(FFT), spectrum zooming