Abstract: We present a novel velocity and length measuring instrument based on laser-feedback interferometry. Uncertainties down to 10$+$MIN@4$/ in length measurement of moving materials can be achieved by combining the measurement signals of two separate sensors. Furthermore the dependence on parameters like the angle of incidence can be eliminated mathematically and no accurate alignment is required. The signal processing unit utilizes a real-time fast Fourier transformation. Thus good signal to noise ratios and very accurate measurements of most scattering surfaces used in industrial production are possible. !9
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机译:摘要:我们提出了一种基于激光反馈干涉法的新型速度和长度测量仪。通过组合两个单独的传感器的测量信号,可以测量运动材料的长度,其不确定度可低至10 $ + MIN @ 4 $ /。此外,可以从数学上消除对像入射角这样的参数的依赖,并且不需要精确的对准。信号处理单元利用实时快速傅立叶变换。因此,可以实现良好的信噪比,并且可以对工业生产中使用的大多数散射表面进行非常精确的测量。 !9
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