期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

基于空时频分析的多分量跳频信号DOA估计 被引量：15

Directions of arrival estimation for multicomponent frequency-hopping signals based on spatial time-frequency analysis
下载PDF
导出
摘要 提出了一种基于空时频分析的多跳频信号波达方向(direction of arrival,DOA)估计方法。该方法能够在欠定条件下(传感器数目小于信号数目)实现多个信号的测向。首先将信号的短时傅里叶变换(short timeFourier transform,STFT)与平滑伪魏格纳-威利分布(smoothed pseudo Wigner-Ville distribution,SPWVD)组合,利用STFT的无交叉项和SPWVD的时频聚焦性性能,得到了一种切实可行、时频图清晰稳健的分布;然后在时频域提取有效跳(hop),并建立该hop的空时频矩阵,最后分别运用线性空时频、二次空时频和root-MUSIC共三种方法估计每hop信号的DOA。仿真结果验证了方法的有效性。 An algorithm of directions of arrival estimation for multicomponet frequency-hopping signals based on spatial time-frequency analysis is proposed, which can realize direction-of-arrival （DOA） estimation in underdetermined condition. First, a clear time-frequency representation is gained by short-time-Fourier-trans-form （STFT） and smoothed-pseudo-Wigner-Ville distribution （SPWVD） synthesis method, which can obtain robust results with good time-frequency concentration and suppression cross-term interference performance. Then, effective hops are selected from the time-frequency distribution, and every hop＇s spatial time-frequency matrix is built. Finally, every hop＇s DOA is estimated by three methods： linear spatial time-frequency method, bilinear spatial time-frequency method, and root-MUSIC. The simulation results demonstrate that the estimation algorithm is effective.
作者 陈利虎
机构地区 国防科学技术大学航天与材料工程学院
出处 《系统工程与电子技术》 EI CSCD 北大核心 2011年第12期2587-2592,共6页 Systems Engineering and Electronics
关键词 跳频 空时频分析 时频聚焦性 交叉项干扰 DOA估计 frequency-hopping （FH） spatial time-frequency analysis time-frequency concentration crossterm interference DOA estimation
分类号 TN911.1 [电子电信—通信与信息系统]
  • 相关文献

参考文献11

  • 1陈利虎,张尔扬,沈荣骏.跳频信号的时频分析[J].宇航学报,2009,30(2):740-747. 被引量：22
  • 2陈利虎,张尔扬.基于数字信道化和空时频分析的多网台跳频信号DOA估计[J].通信学报,2009,30(10):68-74. 被引量：14
  • 3Belouchrani A. Time-frequency MUSIC[J].IEEE Trans. on Signal Processing Letters,1999,6(5):109- 110.
  • 4Belouehrani A, Amin M G. Blind source separation based on time-frequency signal representations[J]. IEEE Trans. on SiR hal Processing,1998,46(1) :2888 - 2897.
  • 5Li Q, Liu Y, Chen H. Direction of arrival estimation using array model in time-frequency domain[C]//Proc, of the International Conference on Audio, Language and Image Processing, 2010: 1112 - 1116.
  • 6Xiong B, Zhao X, Liu H W. DOA estimation of LFM signals[C]// Proc. of the International Conference on Wireless Communications Networking and Mobile Computing ,2010:1 - 3.
  • 7Wang B, Liu J J, Hao X. Time-frequency ESPRIT method for near field source localization[C]//Proc, of the International Conference on Computer, Mechatronics, Control and Electronic Engineering ,2010:214 - 217.
  • 8Francisco P, Martin V. Space-time frequency processing of acoustic wave fields: theory, algorithms, and applications[J].IEEE Trans. on Signal Processing,2010,58(9):4608-4620.
  • 9Cohen L. Time-frequency analysis [M]. New Jersey: Prentice Hall, 1995.
  • 10Abdeldjalil A E B, Nguyen L T, Karim A M, et al. Underde termined blind separation of nondisjoint sources in the time frequency domain[J]. IEEE Trans. on Signal Processing,2007 55(3) ,897 - 907.

二级参考文献16

  • 1Stankovic L. A method for time-frequency analysis [ J ]. IEEE Transactions on Signal Processing, 1994, 42 ( 1 ) : 225 -229.
  • 2Barkat B, Boashash B. A high-resolution quadratic time-frequency distribution for muhicomponent signals analysis [ J ]. IEEE Transactions on Signal Processing, 2001, 49 ( 10 ) : 2232 - 2239.
  • 3Kodera K, Villeaary C D, Gendrin R. A new method for the numerical analysis of time-varying signals with small BT values. Phys, Earth Planet. Interiors, 1976, 12: 142- 150.
  • 4Kodera K, Gendrin R, Villeaary C D. Analysis of time-varying signals with small BT values. IEEE Trans. ASSP, 1986, 34: 64 -76.
  • 5Auger F, Flandrin P. Improving the readability of time-frequency and time-scale representations by the reassignment method [ J ]. IEEE Trans. on Signal Processing, 1995 -05, 43 (5) : 1068 - 1089.
  • 6BELOUCHRANI A. Time-frequency MUSIC[J]. IEEE Trans on SP Letters, 1999, 6(5):109-110.
  • 7BELOUCHRANI A, AMIN M G. Blind source separation based on time-frequency signal representations[J]. IEEE Trans on SP, 1998, 46(1):2888-2897.
  • 8ZHANG Y M, OBEIDAT B A, AMIN M G Spatial polarimetric time-frequency distributions for direction-of-arrival estimations[J]. IEEE Transactions on Signal Processing, 2006, 54(4): 747-759.
  • 9ABDELDJALIL A E B, NGUYEN L T, KARIM A M, et al. Underdetermined blind separation of nondisjoint sources in the time-frequency domain[J]. IEEE Trans on SP, 2007, 55(3):897-907.
  • 10ZAHIRNIAK D R, SHARPIN D L, FIELDS T W. A. Hardware-efficient, multirate, digital channelized receiver architecture[J]. IEEE Trans on Aerospace and Electronic Systems, 1998, 34( 1 ): 137-152.

共引文献32

同被引文献87

引证文献15

二级引证文献48

系统工程与电子技术
2011年 第12期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部