NOISE ROBUST TIME OF FLIGHT ESTIMATION FOR ACOUSTIC PYROMETRY
    1.
    发明公开
    NOISE ROBUST TIME OF FLIGHT ESTIMATION FOR ACOUSTIC PYROMETRY 审中-公开
    RAUSCHBESTÄNDIGEFLUGZEITMESSUNGFÜRAKUSTISCHE PYROMETRIE

    公开(公告)号:EP2893312A2

    公开(公告)日:2015-07-15

    申请号:EP13759379.4

    申请日:2013-08-26

    IPC分类号: G01K11/24 G01K13/02

    摘要: An acoustic signal traversing a hot gas is sampled at a source and a receiver and is represented in overlapping windows that maximize useable signal content. Samples in each window are processed to represented in different sparsified bins in the frequency domain. Determining a signal delay between the source and the receiver from a summation of maximum smoothed coherence transform cross-correlation values of different data windows wherein a sparseness of a mean smoothed coherence transform cross-correlation of windows is maximized. Determining a set of delay times wherein outliers are deleted to estimate a time of flight from which a temperature of the hot gas is calculated.

    摘要翻译: 在源和接收器处对穿过热气体的声信号进行采样,并在重复的窗口中表示,其使可用的信号内容最大化。 每个窗口中的样本被处理以在频域中的不同的稀疏箱中表示。 从最大平滑相干变换的最大平滑相干变换的相加值确定源和接收器之间的信号延迟,其中平均平滑相干变换互相关的窗口的稀疏度被最大化。 确定一组延迟时间,其中异常值被删除以估计计算热气体的温度的飞行时间。