| 信号变频引入相差后的时延估计方法 |
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| 引用本文： | 李志刚,杨景曙,王江.信号变频引入相差后的时延估计方法[J].火力与指挥控制,2009,34(6). |
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| 作者姓名： | 李志刚 杨景曙 王江 |
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| 作者单位： | 解放军电子工程学院,安徽,合肥,230037 |
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| 摘 要： | 分析了用同-本振对两路存在相对时差的信号进行变频时引入新的相差的原因,提出了一种新的相位补偿时延估计算法,与传统的存在相差的时延估计方法相比,新方法将传统的对相差和时差的二维搜索改进为单纯对时差的一维搜索,大大地提高了运行效率,巧妙地解决了变频引入相差条件下的时延估计问题.
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| 关 键 词： | 时延估计 相差 变频 |
The Research on Time Delay Estimation Method with the Phase Difference Resulting from Frequency Mixing |
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| LI Zhi-gang,YANG Jing-shu,WANG Jiang.The Research on Time Delay Estimation Method with the Phase Difference Resulting from Frequency Mixing[J].Fire Control & Command Control,2009,34(6). |
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| Authors: | LI Zhi-gang YANG Jing-shu WANG Jiang |
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| Institution: | Electronic Engineering Institute of PLA;Hefei 230037;China |
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| Abstract: | The reason of bringing new phase difference is analyzed when two signals with time delay is mixed by the same signal.A new TDE method using the phase difference compensation is presented.Comparing with the traditional TDE method dealing with phase difference,the new one turned the search of two dimensions in phase difference and time delay into one dimension only in time delay.The efficiency is highly improved,and the TDE problem with phase difference result from frequency mixing is solved ingeniously. |
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