激光多普勒双光束横向测速技术研究

详细信息

Investigation on dual-beam Doppler speedometer based on CO2 lasers

摘要: 为了实现基于CWCO2激光的运动目标横向速度测量,使用双光束方式在室内进行了实验,得到了较清晰的多普勒频移信号,并对信号数据进行了滤波处理,以提高信噪比。计算出了运动目标速度并与实际速度进行了比较。结果表明,测得速度值与实际值相当接近。
- 激光技术 /
- 多普勒测速 /
- 双光束 /
- 测量区 /
- 快速傅里叶变换
Abstract: An experiment set-up is constructed to measure the transverse velocity of a moving target by using dual beam mode of CW CO2 laser in the laboratory.The experiment is conducted in the laboratory using dual-beam mode and clear Doppler frequency signals are recorded,and signal data filtering is performed leading to an enhanced SNR.The calculated velocity of the moving target is compared with the actual velocity.The result shows that the measured velocity corresponds with the actual velocity very well.
- laser technique /
- Doppler speedometer /
- dual-beam /
- measurement volume /
- fast Fourier transform(FFT)

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