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| 基于立方卷积插值的信号DFT频谱校正算法 | |
| 引用本文： | 王晓君,周希元,龙腾.基于立方卷积插值的信号DFT频谱校正算法[J].无线电工程,2009,39(5). |
| 作者姓名： | 王晓君 周希元 龙腾 |
| 作者单位： | 1. 石家庄市通信测控技术研究所博士后工作站,河北,石家庄,050081;北京理工大学博士后流动站,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. 石家庄市通信测控技术研究所博士后工作站,河北,石家庄,050081 3. 北京理工大学博士后流动站,北京,100081 |
| 摘 要： | 由于栅栏效应的存在,会使得基于信号DFT谱峰搜索的测频算法产生很大误差,因此在测频之前一般需对信号的DFT频谱进行校正。推导出用于单正弦信号DFT频谱校正的立方卷积插值核函数、插值函数及形状参数,并依据脉冲雷达信号是无数个正弦信号之和的事实,将其推广至脉冲雷达信号DFT频谱的幅度校正,给出其频谱检测算法。 |
| 关 键 词： | DFT频谱 立方卷积 频谱校正 频谱检测 |
Correction Algorithm of DFT Spectrum Based on Cubic Convolution Interpolation |
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| WANG Xiao-jun,ZHOU Xi-yuan,LONG Teng.Correction Algorithm of DFT Spectrum Based on Cubic Convolution Interpolation[J].Radio Engineering of China,2009,39(5). | |
| Authors: | WANG Xiao-jun ZHOU Xi-yuan LONG Teng |
| Abstract: | Because of existing fence effect,the frequency measurement algorithm based on DFT spectrum peak of signal will produce greatly error,so the correction to DFT spectrum of signal is necessary.The interpolation kernel function and interpolation of correction algorithm of single sine signal based on cubic convolution are derived and shape parameter is determined via simulation.According to the fact of pulse radar signal is constituted of countless sine signals,analysis and correction algorithm of DFT spectrum of pulse radar signal is derived. |
| Keywords: | DFT spectrum cubic interpolation spectrum correction spectrum detection |
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