[1]赵兆,是湘全,王志华,等.近程PRC-CW雷达扩展多普勒容限方法研究[J].南京理工大学学报(自然科学版),2009,(03):361-365.
 ZHAO Zhao,SHI Xiang-quan,WANG Zhi-hua.Doppler Tolerance Expansion of Short-range PRC-CW Radar[J].Journal of Nanjing University of Science and Technology,2009,(03):361-365.
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近程PRC-CW雷达扩展多普勒容限方法研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2009年03期
页码:
361-365
栏目:
出版日期:
2009-06-30

文章信息/Info

Title:
Doppler Tolerance Expansion of Short-range PRC-CW Radar
作者:
赵兆;是湘全;王志华;
南京理工大学电子工程与光电技术学院, 江苏南京210094
Author(s):
ZHAO ZhaoSHI Xiang-quanWANG Zhi-hua
School of Electronic Engineering and Optoelectonic Technology,NUST,Nanjing 210094,China
关键词:
雷达 多普勒测量 容限扩展 伪随机码 脉冲压缩 插值快速傅里叶变换 目标
Keywords:
radars Doppler measurement tolerance expansion pseudo random code pulse compression interpolated fast Fourier transform targets
分类号:
TN958.94
摘要:
针对伪码调相连续波(PRC-CW)雷达信号的多普勒敏感性,提出了一种扩展多普勒容限的新方法。该方法将单频脉冲信号和伪码调相信号结合起来,采用两种波形交替发射,在利用插值快速傅里叶变换方法得到各目标对应多普勒频率的基础上,构造相应的多普勒补偿后的信号再进入距离波门进行脉压-快速傅里叶变换处理,消除了原有的多普勒容限的影响,使该体制雷达可以应用于近程高速目标的搜索和跟踪,多普勒频率估计方差接近单频回波时段的Cra-mer-Rao下限。
Abstract:
A novel method to expand the Doppler tolerance is presented to suppress the Doppler sensitivity of the pseudo random code continuous wave(PRC-CW) radar signal.It utilizes a composite signal which is a cascade of single frequency pulse and pseudo random phase-coded signal.The Doppler frequencies of targets are firstly estimated based on interpolated fast Fourier transform method and the Doppler compensated signal is constructed.The effect of Doppler frequency on the correlation detection can be efficiently suppressed by processing the compensated signal with pulse compression-fast Fourier transform,which makes the radar suitable for short-range high-speed target detection.The Doppler frequency estimation error is approaching Cramer-Rao lower bounds.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 赵兆( 1979- ) , 男, 讲师, 主要研究方向: 雷达信号处理, E-mail:sky soarer@ 21cn. com;
通讯作者: 是湘全( 1945- ) , 男, 教授, 博士生导师, 主要研究方向: 雷达系统及其信号处理, E-mail:eexqshi@public1. ptt. js. cn。
更新日期/Last Update: 2012-11-19