发明名称 |
FILLING LEVEL MEASUREMENT WITH IMPROVED DISTANCE DETERMINATION |
摘要 |
A method for determining frequency components of a discrete time signal, comprising steps as follows: transforming the discrete time signal into the frequency domain by means of a fast Fourier transformation, wherein a frequency spectrum is obtained as a sequence of frequency sample values, detecting peaks in the frequency spectrum, introducing at least one additional frequency support point in the vicinity of a detected peak, determining a frequency amplitude at the at least one additional frequency support point by means of the Goertzel algorithm, and determining the position of the peak maximum of the detected peak by applying both the frequency sample values delivered by the fast Fourier transformation as well as also the frequency amplitude at the at least one additional frequency support point. |
申请公布号 |
EP2997336(A1) |
申请公布日期 |
2016.03.23 |
申请号 |
EP20140722134 |
申请日期 |
2014.04.22 |
申请人 |
ENDRESS+HAUSER GMBH+CO. KG |
发明人 |
FABER, HARALD;MAYER, WINFRIED;MALINOVSKIY, ALEXEY |
分类号 |
G01F25/00;G01F23/28;G01S13/88 |
主分类号 |
G01F25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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