| 改进的脉冲雷达信号加窗DFT频谱校正算法 |
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| 引用本文： | 王晓君,陈禾,仲顺安. 改进的脉冲雷达信号加窗DFT频谱校正算法[J]. 北京理工大学学报, 2008, 28(2): 164-167 |
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| 作者姓名： | 王晓君 陈禾 仲顺安 |
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| 作者单位： | 1. 北京理工大学信息科学技术学院电子工程系,北京,100081;河北科技大学信息科学与工程学院,河北,石家庄,050018
2. 北京理工大学信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 为了减少加窗效应对基于离散傅里叶变换(DFT)频谱分析的测频算法产生的不良影响,推导了不同K值下,广义余弦类窗函数的频谱及幅度比值法插值校正公式.针对脉冲雷达信号DFT频谱校正问题,提出一种改进的Sinc窗函数.仿真结果表明,通过选择最优插值窗函数,可减少窗口效应并简化插值校正算法;该算法符合基于大点数DFT的脉冲雷达信号数字接收机的实际应用.
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| 关 键 词： | 脉冲雷达 数字接收机 离散傅里叶变换 窗口效应 频谱校正 插值 |
| 文章编号： | 1001-0645（2008）02-0164-04 |
| 收稿时间： | 2007-07-04 |
| 修稿时间： | 2007-07-04 |
Improved Correction Algorithm of Windowed DFT Spectrum for Pulsed Radar Signal |
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| WANG Xiao-jun,CHEN He and ZHONG Shun-an. Improved Correction Algorithm of Windowed DFT Spectrum for Pulsed Radar Signal[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2008, 28(2): 164-167 |
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| Authors: | WANG Xiao-jun CHEN He ZHONG Shun-an |
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| Affiliation: | Department of Electronic Engineering; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China; School of Information Science and Engineering; Hebei University of Science and Technology; Shijiazhuang; Hebei 0500;Department of Optical Engineering; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China;Department of Optical Engineering; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China |
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| Abstract: | To reduce the evil influence of the window effect to discrete Fourier transform (DFT) spectrum analysis,interpolation equations of generalized cosine window function with different K are derived.Aimed at a DFT spectrum for pulse radar signal,an improved Sinc window function adapted to engineering applications is deduced.Simulation showed that window effects can be reduced and correction algorithm with interpolation can be simplified through selecting optimal window functions. |
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| Keywords: | pulsed radar digital receiver discrete Fourier transform(DFT) windows effect spectrum correction interpolation |
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