The characteristic of multiple current resistivity profile using Code-Division Multiple-Access technique regarding data quality

Summary The multiple and simultaneous current injection method based on Code-Division Multiple-Access technique.is proposed for highly efficient resistivity and IP profiling. In this technique, we design current waveforms according to regulated combination of codes, i.e., +1 or -1 related to current polarity. In principle, the more simultaneous current injection we use, the longer the number of codes we need to set. In the aspect of improvement of data quality, it is expected that we can obtain the same effect of stacking procedure by number of the length of codes used in multiple current transmission waveforms in principle. In this paper, we show this characteristic of data quality improvement when using multiple current transmission technique thorough numerical experiment and field measurement.