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公开(公告)号:EP0887658B1
公开(公告)日:2004-08-25
申请号:EP97110575.4
申请日:1997-06-27
IPC分类号: G01S13/38
CPC分类号: G01S13/38 , G01F23/284 , G01S7/003 , G01S7/354 , G01S13/88 , G01S2007/356 , H01Q1/225
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公开(公告)号:EP0887658A1
公开(公告)日:1998-12-30
申请号:EP97110575.4
申请日:1997-06-27
IPC分类号: G01S13/38
CPC分类号: G01S13/38 , G01F23/284 , G01S7/003 , G01S7/354 , G01S13/88 , G01S2007/356 , H01Q1/225
摘要: The present invention is directed to a method and apparatus of operating a FMCW radar tank level gauge (14) that measure a level (13) in a tank (10) by obtaining a set of data points of mixed transmitted waves and received waves. The method comprises generating and storing a set of spectral data values including a received target marker indicating the level; calculating an adaptive set of masking threshold values corresponding to at least a portion of the spectral data values; comparing the adaptive set of masking threshold values with the corresponding spectral data values to identify at least one spectral data value associated with the level; calculating the level of the tank from said at least one spectral data value; and reporting the level of the tank.
摘要翻译: 本发明涉及一种操作FMCW雷达罐液位计(14)的方法和装置,其通过获得一组混合的发射波和接收波的数据点来测量罐(10)中的液位(13)。 该方法包括生成和存储一组光谱数据值,包括指示该电平的接收目标标记; 计算对应于所述光谱数据值的至少一部分的自适应掩蔽阈值集合; 将所述屏蔽阈值的自适应集合与对应的频谱数据值进行比较以识别与所述电平相关联的至少一个频谱数据值; 从所述至少一个光谱数据值计算所述容器的水平; 并报告坦克的水平。
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