发明授权
US06781521B1 Filters for canceling multiple noise sources in borehole electromagnetic telemetry system
有权
用于消除井眼电磁遥测系统中多种噪声源的滤波器
- 专利标题： Filters for canceling multiple noise sources in borehole electromagnetic telemetry system
- 专利标题（中）： 用于消除井眼电磁遥测系统中多种噪声源的滤波器
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申请号： US09923185申请日： 2001-08-06
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公开(公告)号： US06781521B1公开(公告)日： 2004-08-24
- 发明人: Wallace R. Gardner , Paul F. Rodney , Harrison C. Smith
- 申请人： Wallace R. Gardner , Paul F. Rodney , Harrison C. Smith
- 主分类号： H03H730
- IPC分类号： H03H730
摘要：
An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Multiple noise channels are coupled to series connected adaptive filters for removing each noise source from the signal channel. The order of noise removal is selected to remove the most significant first.
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