| FMCW雷达物位系统的算法设计 |
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| 引用本文： | 韩辉,冷建伟,安飞.FMCW雷达物位系统的算法设计[J].天津理工大学学报,2011,27(4):27-31. |
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| 作者姓名： | 韩辉 冷建伟 安飞 |
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| 作者单位： | 1. 73681部队,南京,210042
2. 天津理工大学自动化学院,天津,300384 |
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| 摘 要： | 文中针对雷达物位计中差拍信号中心频率计算不准确的问题进行研究.首先使用窗函数法对差拍信号进行截取和滤波,减小频率泄漏和噪声的影响.其次,通过快速傅里叶变换从频谱中粗略的得到目标的相对位置.最后,利用谱估计的改进法对频谱进行细化处理,在不增加过多计算量的基础上实现了测距精度的提高.仿真结果表明测量精度比传统的直接FFT法提高了500倍左右,满足了物位计的技术标准,保证了系统的距离测量精度.
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| 关 键 词： | 调频连续波雷达 物位计 差拍信号 谱估计 |
Design of the algorithm method in FMCW radar measurement system |
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| HAN Hui,LENG Jian-wei,AN Fei.Design of the algorithm method in FMCW radar measurement system[J].Journal of Tianjin University of Technology,2011,27(4):27-31. |
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| Authors: | HAN Hui LENG Jian-wei AN Fei |
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| Institution: | HAN Hui1,LENG Jian-wei2,AN Fei2(1.Unit 73681,Nanjing 210042,China,2.School of Electrical Engeering,Tianjin University of Technology,Tianjin 300384,China) |
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| Abstract: | According to the low precision of center frequency calculation in radar measuring system.Three steps can be divided to the difference signal processing.First of all,the window function should be used to truncate the signal and filter out the noise so that the influence of frequency leak and clutter can be reduced.Secondly,the relative position can be found out from the spectrum through FFT.Finally,the spectral estimation method should be used to do the further processing which can improved the measuring acc... |
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| Keywords: | FMCW radar measurement system difference signal spectral estimation method |
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