| 基于FPGA的全相位FFT高精度相位测量 |
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| 引用本文： | 沈艳芳,陈丽花,陈星. 基于FPGA的全相位FFT高精度相位测量[J]. 电子测量技术, 2011, 34(8): 52-55 |
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| 作者姓名： | 沈艳芳 陈丽花 陈星 |
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| 作者单位： | 北京航空航天大学电子信息工程学院 北京100191 |
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| 摘 要： | 传统的FFT测相方法,若不采取一些繁复的补偿和修正措施,只有在满足信号频率为频率分辨率整数倍的条件下才有意义,而这个制约条件在实际工程应用中往往难以满足.基于全相位FFT(apFFT)的思想,结合实际工程应用要求,设计并在FPGA平台上实现了1种高精度相位检测系统.在MATLAB环境下的功能模拟和性能仿真,以及在FFG...
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| 关 键 词： | 全相位FFT 高精度相位测量 FPGA CORDIC算法 |
High-precision phase detection with apFFT based on FPGA |
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| Shen Yanfang,Chen Lihua,Chen Xing. High-precision phase detection with apFFT based on FPGA[J]. Electronic Measurement Technology, 2011, 34(8): 52-55 |
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| Authors: | Shen Yanfang Chen Lihua Chen Xing |
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| Affiliation: | Shen Yanfang Chen Lihua Chen Xing(School of Electronic and Information Engineering,Beihang University,Beijing 100191) |
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| Abstract: | Traditional FFT based phase detection methods are applicable only when the signal frequency is an integer multiple of the signal resolution.In practice,complicated compensation and correction must be taken to overcome this constraint.To address the difficulty,a novel high-precision phase detection method is proposed utilizing the idea of all phase FFT,and corresponding practical system is realized based on FPGA.Functional simulation and evaluation using MATLAB and FPGA platform has demonstrated the successf... |
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| Keywords: | all phase FFT high-precision phase detection FPGA CORDIC algorithm |
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