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Digital signal processing techniques for high accuracy ultrasonic range measurements

机译:用于高精度超声波测距的数字信号处理技术

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摘要

Several digital signal processing (DSP) methods are analyzed and compared with respect to the expected errors for an ultrasonic range measurement arrangement. These include L1, L2 norms and correlation with different approaches for envelope extraction. The influence of different factors such as signal-to-noise ratio (SNR), sampling frequency, and digitizing resolution on measurement errors is analyzed using a synthetic approach through nearly 40000 simulations. Results show different performance levels involving accuracy, computing time, and cost for the studied methods, although all of them allow reduction of errors by several orders of magnitude.
机译:针对超声距离测量装置的预期误差,分析并比较了几种数字信号处理(DSP)方法。这些包括L1,L2规范以及与用于包络提取的不同方法的相关性。通过近40000次仿真,使用一种综合方法来分析信噪比(SNR),采样频率和数字化分辨率等不同因素对测量误差的影响。结果显示了所研究方法的不同性能水平,包括准确性,计算时间和成本,尽管所有这些方法都可以将错误减少几个数量级。

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