[1]吴昊,苏卫民,顾红,等.基于非均匀快速傅氏变换的多站无源雷达成像算法[J].南京理工大学学报(自然科学版),2012,36(06):0.
 WU Hao,SU Wei min,GU Hong,et al.Multistatic Radar Imaging Algorithm Based on Nonuniform Fast Fourier Transform Method[J].Journal of Nanjing University of Science and Technology,2012,36(06):0.
点击复制

基于非均匀快速傅氏变换的多站无源雷达成像算法
分享到:

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年06期
页码:
0
栏目:
出版日期:
2012-12-31

文章信息/Info

Title:
Multistatic Radar Imaging Algorithm Based on Nonuniform Fast Fourier Transform Method
作者:
吴昊苏卫民顾红薄超
南京理工大学 电子工程与光电技术学院,江苏 南京 210094
Author(s):
WU HaoSU WeiminGU HongBO Chao
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
关键词:
非均匀快速傅氏变换多站无源雷达成像直接傅里叶重构算法
Keywords:
nonuniform fast Fourier transformpassive multistatic radarsimagingdirect Fourier reconstruction method
分类号:
TN957.52
摘要:
为了解决基于窄带外辐射源的无源雷达成像无法获得理想分辨率的问题,增加多个不同发射频率的外辐射源以获得更大的合成带宽。推导了散射强度函数和接收站采集数据的傅氏变换对关系。针对采集数据在频域存在非均匀分布且稀疏的缺陷,提出了基于快速非均匀傅氏变换的无源雷达成像算法。仿真结果证实与直接傅里叶重构算法相比,在民用照射源分布密集区域,该算法的目标在小角度转动下也可获得理想成像效果。
Abstract:
To solve the problem of the passive radar imaging based on narrowband external illuminators that can’t achieve an ideal resolution,this paper increases multiple external illuminators with different emission frequencies to achieve larger synthetic bandwidth.The relationship of Fourier transform between the scatter function and the collected data of receiving stations is deduced.A passive radar imaging algorithm based on the nonuniform fast Fourier transform is presented due to the fact that the collected data are nonuniform and sparse in the frequency domain.Numerical simulations show that compared with the direct Fourier reconstruction method,this algorithm has better imaging performances at the instant of small rotating angle in the area with dense civil illumination sources.

参考文献/References:

[1]苏卫民,顾红,张先义.基于外辐射源的雷达目标探测与跟踪技术研究[J].现代雷达,2005,27(4):19-22. Su Weimin,Gu Hong,Zhang Xianyi.A study on radar target detection and tracking technology based on opportunity transmitter[J].Modern Radar,2005,27(4):19-22.
[2]Palmer J,Palumbo S,Summers A,et al.An overview of an illuminator of opportunity passive radar research project and its signal processing research directions[J].Digital Signal Processing,2011,21(5):593-599. 
[3]Wu Y,Munson D C.Multistatic synthetic aperture imaging of aircraft using reflected television signals[A].Proceedings of SPIE—The International Society for Optical Engineering[C].Orlando,FL,USA:SPIE,2001:1-12.
[4]张馨文,王俊.基于多外辐射源台子孔径综合的无源雷达成像算法[J].电子与信息学报,2007,29(3):528-531. Zhang Xinwen,Wang Jun.Passive radar imaging algorithm based on subapertures synthesis of multiple television stations[J].Journal of Electronics & Information Technology,2007,29(3):528-531.
[5]刘兆磊,徐振来,张光义,等.基于非均匀采样间隔的数据关联算法研究[J].南京理工大学学报,2007,31(3):327-331 Liu Zhaolei,Xu Zhenlai,Zhang Guangyi,et al.Data association algorithm based on nonuniform sampling[J].Journal of Nanjing University of Science and Technology,2007,31(3):327-331.
[6]Liu Qinghuo,Xu Xuemin,Bo Tian,et al.Applications of nonuniform fast transform algorithms in numerical solutions of differential and integral equations[J].IEEE Transactions on Geoscience and Remote Sensing,2000,38(4):1551-1560.
[7]Fessler J,Sutton B.Nonuniform fast Fourier transforms using minmax interpolation[J].IEEE Transactions on Signal Processing,2003,51(2):560-574.
[8]Lee J Y,Greengard L.The type 3 nonuniform FFT and its applications[J].Journal of Computational Physics,2005,206(1):1-5.
[9]Andersson F,Moses R,Natterer F.Fast Fourier methods for synthetic aperture radar imaging[J].IEEE Transactions on Aerospace and Electronic Systems,2012,48(1):215-229.

备注/Memo

备注/Memo:
收稿日期:2012-04-28修回日期:2012-10-26 基金项目:国家部委基金(9140A07010311BQ02);教育部博士点基金(20113219110018);江苏省普通高校研究生科研创新计划(CXZZ11_0252);南京理工大学自主科研专项计划(2010ZDJH05) 作者简介:吴昊(1984-),男,博士生,主要研究方向:无源雷达成像,Email:wuhaorceet@126.com;通讯作者:苏卫民(1959-),男,博士生导师,主要研究方向:雷达成像,Email:suweimin@njust.edu.cn。
更新日期/Last Update: 2012-12-29