Multi-Stage Equalisation Method and Apparatus for

专利名称：Multi-Stage Equalisation Method and

Apparatus for Use in Telemetry

发明人：Jonathan Thursby,Sumanth Eadala,Jonathan

Brian Rudd

申请号：US15446444申请日：20170301

公开号：US20170272120A1公开日：20170921

专利附图：

摘要：An inspection apparatus for use in wellbores in the oil and gas industries relatesin general to the field of transmission of data between downhole module in a wellbore

and a controlling module at the surface. The invention provides a method and apparatusfor determining analogue filter parameters for an analogue front end comprising aplurality of filter stages receiving signals from a telemetry module, by repeating thesteps of; receiving a signal of a known frequency and processing said signal bydetermining the magnitude of the frequency of the received signal until a plurality ofsignals have been received and processed; calculating an optimum set of filter

parameters in dependence upon the measured frequency magnitudes and a predefinedset of filter stage frequency responses.

申请人：E.V. Offshore Limited

地址：Norwich GB

国籍：GB

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