underground communications

On the joint determination of the projections of the axis and the depth of underground communication by induction search devices

In article [3] describes the traditional method for determining the projections of the underground communications axis (PC) by PC inductive searchers (IPCs) in the "maximum" and "minimum" modes. Working in the "maximum" mode is used for approximate search of a PC, therefore in the following we consider only work in the "minimum" mode.