EFFICIENT SPECIFIC RESISTANCE MEASURING METHOD ACC

专利名称：EFFICIENT SPECIFIC RESISTANCE

MEASURING METHOD ACCORDING TOMULTI-POINT SIMULTANEOUS

ENERGIZATION SYSTEM MAKING PSEUDO-NOISE SIGNAL INTO ENERGIZATIONWAVEFORM

发明人：IMAMURA, SUGIO申请号：EP08776975申请日：20080529公开号：EP2157447A4公开日：20150429

摘要：To solve problems with conventional art, the present invention aims tosignificantly reduce measurement time for electrical resistivity profiling and loggingwithout degrading the quality of the measurement by simultaneously transmitting acurrent from multiple points to underground and carrying out mathematic processing tocalculate a potential obtained when a current is transmitted independently from anytransmission point, based on observed response potential waveforms. At simultaneouslytransmission from multiple points, such current waveforms as zero the covariance thereofare selected. Then, a possible response obtained independently at transmission point canbe determined by dividing the covariance of the observed potential waveform and thecurrent waveform by the variance of the current waveform. As the waveform zeroing thecovariance, an M-sequence code with zero added to the end thereof is applied.

申请人：YUUGEN KAISHA CHIKENTANSA GIJUTSUKENKYUSHO,OUYOU CHISHITSU

KABUSHIKI KAISHA

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