| 一种解决调频连续测距中测距模糊方法 |
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| 引用本文： | 刘恺,崔占忠.一种解决调频连续测距中测距模糊方法[J].科技导报(北京),2011(11). |
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| 作者姓名： | 刘恺 崔占忠 |
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| 作者单位： | 北京理工大学机电工程与控制国防重点实验室; |
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| 基金项目： | 总装备部重点基金项目(9140A05070508BQ0103) |
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| 摘 要： | 通过对锯齿调频连续测距系统的差频信号分析可知,由于观测时间的随机性导致同一距离上对应两个不同的差频频率。对差频信号进行时域和频域分析发现,利用两次混频的方法能够解决这种测距模糊问题,使信号处理单元的输出信号频率和距离一一对应。利用仿真软件,得到信号处理过程中的时频关系曲线,验证了这种信号处理方法的有效性。
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| 关 键 词： | 调频连续测距 观测随机性 测距模糊 |
A Resolution to Ranging Ambiguity in Frequency Modulated Continuous Wave Ranging System |
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| LIU Kai,CUI Zhanzhong National Defense Key Laboratory of Mechatronics Engineering , Control,Beijing Institute of Technology,Beijing ,China.A Resolution to Ranging Ambiguity in Frequency Modulated Continuous Wave Ranging System[J].Science & Technology Review,2011(11). |
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| Authors: | LIU Kai CUI Zhanzhong National Defense Key Laboratory of Mechatronics Engineering Control Beijing Institute of Technology Beijing China |
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| Institution: | LIU Kai,CUI Zhanzhong National Defense Key Laboratory of Mechatronics Engineering and Control,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | There are two different frequencies corresponding to the same distance caused by the randomness of observation time,based on the analysis on the different frequency of sawtooth frequency modulated continuous wave ranging system.By means of analysis on the difference frequency signal in time domain and frequency domain,it is found that this kind of ranging ambiguity can be settled by mixing frequency twice.The output frequency of the signal processing unit corresponds with the distance one to one at any obse... |
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| Keywords: | frequency modulated continuous wave ranging system randomness of observation time ranging ambiguity |
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