| 基于小波变换的多普勒频率变化率高精度估计方法 |
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| 引用本文： | 郁春来,吕韶昱,万方,万建伟.基于小波变换的多普勒频率变化率高精度估计方法[J].电子学报,2007,35(9):1656-1659. |
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| 作者姓名： | 郁春来 吕韶昱 万方 万建伟 |
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| 作者单位： | 1. 国防科学技术大学电子科学与工程学院,湖南长沙 410073;2. 92941部队,辽宁葫芦岛 125000;3. 空军雷达学院研究生管理大队,湖北武汉 430019 |
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| 摘 要： | 在单站无源定位与跟踪系统中,获取多普勒频率变化率信息对运动目标的状态估计和定位具有非常重要的意义.多普勒频率变化率非常微弱,很难精确测量.小波变换是一种时频局域化的分析方法,具有较低的信噪比门限.本文提出了基于小波变换的多普勒频率变化率估计方法,计算机仿真研究表明本文提出的方法具有较低的信噪比门限,并且可以快速精确地实现参数估计.
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| 关 键 词： | 多普勒频率变化率 小波变换 参数估计 |
| 文章编号： | 0372-2112（2007）09-1656-04 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-15 |
An Accurate Estimation Algorithm for Doppler Frequency Rate-of-Change Based on Wavelet Transform |
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| YU Chun-lai,LV Shao-yu,WAN Fang,WAN Jian-wei.An Accurate Estimation Algorithm for Doppler Frequency Rate-of-Change Based on Wavelet Transform[J].Acta Electronica Sinica,2007,35(9):1656-1659. |
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| Authors: | YU Chun-lai LV Shao-yu WAN Fang WAN Jian-wei |
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| Affiliation: | 1. College of Electronic Science and Engineering,NUDT,Changsha,Hunan 410073,China;2. 92941 Unit of PLA,Huludao,Liaoning 125000,China;3. Group of Graduate Management,AFRA,Wuhan,Hubei 430019,China |
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| Abstract: | In the passive locating and tracking system of single observer,an obtainment of Doppler Frequency Rate-of-Change is very important for the state estimation and location of a moving target.The Doppler Frequency Rate-of-Change is very difficult to estimate accurately because of its subtleness.Wavelet transform has the time-frequency localization characteristic and low SNR threshold.An algorithm based on wavelet transform is proposed to estimate the Doppler Frequency Rate-of-Change,the computer simulation study shows that this algorithm has low SNR threshold and obtain the parameter estimation fast and accurately. |
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| Keywords: | Doppler frequency rate-of-change wavelet transform parameter estimation |
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