METHOD AND APPARATUS FOR ELECTROMAGNETIC SOUNDING OF GEOPHYSICAL ANOMALIES

摘要

A method is provided for detecting geophysical anomalies. Electrical energy is capacitively accumulated with a charging circuit until a breakdown voltage of a switch is reached. Thereafter, the accumulated electrical energy is discharged by passing a discharge current (28) through a transmitter antenna (8) to transmit an electromagnetic pulse into a geophysical region. This technique allows an increase in the strength of an electromagnetic sounding signal, while simultaneously reducing energy consumption, and thereby also permitting smaller weights and dimensions for the power supply (3).