| 多频连续波雷达二次差频测距法的改进 |
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| 引用本文： | 张昆帆,程翥,皇甫堪.多频连续波雷达二次差频测距法的改进[J].电子学报,2006,34(6):1012-1015. |
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| 作者姓名： | 张昆帆 程翥 皇甫堪 |
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| 作者单位： | 解放军信息工程大学信息工程学院,河南,郑州,450002;国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 在一定的信噪比下,二次差频测距法只有增加频点数才能增大测距范围或提高测距精度.本文从二次差频测距的基本原理出发详细推导了二次差频法正确测距对输出信噪比的要求,给出了测距精度与输出信噪比之间的关系,然后提出了一种新的差频测距算法——频差组合法,在相同的信噪比和频点数不增加的情况下,提高了测距性能.最后通过仿真,验证了该算法的有效性.
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| 关 键 词： | 多频测距 二次差频 信噪比 频差组合 |
| 文章编号： | 0372-2112（2006）06-1012-04 |
| 收稿时间： | 2005-06-08 |
| 修稿时间： | 2005-06-082005-12-21 |
Improvement of Quadric Difference Frequency Base on Multiple Frequencies CW Ranging Radar |
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| ZHANG Kun-fan,CHENG Zhu,HUANGFU Kan.Improvement of Quadric Difference Frequency Base on Multiple Frequencies CW Ranging Radar[J].Acta Electronica Sinica,2006,34(6):1012-1015. |
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| Authors: | ZHANG Kun-fan CHENG Zhu HUANGFU Kan |
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| Institution: | 1. College of Information Engineering,PLA Information Engineering University,Zhengzhou,Henan450002,China;2. College of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan410073,China |
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| Abstract: | Quadric difference frequency needs more frequencies to range longer distance or to range more precisely under fixed SNR. The requirements of SNR to range correctly and the relationship between SNR and precision have been deduced in detail. Then a new method - combination frequency difference is proposed, which improves the performance of ranging under the same number of frequencies and the same condition. Finally simulated results verify the validity of the method. |
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| Keywords: | multiple frequencies ranging quadric difference signal noise ratio combination frequency difference |
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