MULTI-STAGE EQUALISATION METHOD AND APPARATUS FOR

专利名称：MULTI-STAGE EQUALISATION METHOD

AND APPARATUS FOR USE IN TELEMETRY

发明人：THURSBY, Jonathan,EADALA,

Sumanth,RUDD, Jonathan, Brian

申请号：EP14713582.6申请日：20140228公开号：EP2962436A1公开日：20160106

摘要：The present invention relates to inspection apparatus for use in wellbores in theoil and gas industries. In particular the invention relates in general to the field oftransmission of data between downhole module in a wellbore and a controlling moduleat the surface. The invention provides a method and apparatus for determining analogfilter parameters for an analog front end comprising a plurality of filter stages receivingsignals from a telemetry module, by repeating the steps of; receiving a signal of a knownfrequency and processing said signal by determining the magnitude of the frequency ofthe received signal until a plurality of signals have been received and processed;calculating an optimum set of filter parameters in dependence upon the measuredfrequency magnitudes and a predefined set of filter stage frequency responses.

申请人：E.V. Offshore Limited

地址：EV Technology Centre 19 Frensham Road Sweet Briar Industrial Estate NorwichNR3 2BT GB

国籍：GB

代理机构：Dummett Copp LLP

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