| 基于WDR联合FFT方法的脉冲相干测速精度研究 |
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| 引用本文： | 龚靖,伍波,万家硕,赵青虎,成家豪.基于WDR联合FFT方法的脉冲相干测速精度研究[J].激光技术,2023,47(1):92-97. |
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| 作者姓名： | 龚靖 伍波 万家硕 赵青虎 成家豪 |
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| 作者单位： | 1.成都信息工程大学 光电工程学院, 成都 610225 |
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| 摘 要： | 为了提高远距离测速精度, 采用一种基于小波分解与重构(WDR)联合快速傅里叶变换(FFT)的信号处理方法(WDR & FFT), 进行了理论分析与实验验证, 取得了不同速度下的硬目标脉冲相干测速数据。结果表明, WDR & FFT方法可准确地分辨速率变化为0.02 m/s的目标。该研究为远距离低速目标的高分辨率测速提供了参考。
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| 关 键 词： | 激光技术 激光测速 相干探测 小波分解与重构 测速精度 |
| 收稿时间： | 2022-01-24 |
Research on the precision of pulse coherent velocimetry based on WDR combined FFT method |
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| Abstract: | In order to improve the accuracy of long-distance speed measurement, a signal processing method based on wavelet decomposition reconstruction (WDR) combined with fast Fourier transform (FFT) was adopt in this paper. Theoretical analysis and experimental verification were carried out, and the pulse coherent velocimetry data of hard targets at different speeds were obtained. The results show that the targets with a velocity change of 0.02 m/s can be accurately resolved by using the WDR & FFT method. This research provides a reference for the high-resolution velocity measurement of long-distance and low-velocity targets. |
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