| 摘要 |
FIELD: instrument making. ^ SUBSTANCE: proposed system comprises one or several seismic signal sources, multiple seismic pickups arranged on receiving cable, one or several sources of electromagnetic signals multiple electromagnetic pickups arranged on the aforesaid receiving cable or connected to it in some other way. Electromagnetic pickups feature, primarily, linear distance ratios relative to said seismic pickups arranged along the said cable. ^ EFFECT: higher accuracy of data obtained. ^ 28 cl, 9 dwg |
