An airborne exploration system used with an aircraft for shallow and deep exploration
for oil and gas, mineral deposits and aquifers. The survey system uses natural
electromagnetic EM fields as an energy source. The exploration system includes
a pair of aerodynamic housing pods adapted for mounting on wing tips of the aircraft.
The housing pods include electric field sensors with three orthogonal electric
dipoles oriented along an X, Y and Z axis. An optional third set of orthogonal
electric dipoles can be mounted in the tail of the aircraft. The field sensors
are electrically attached to angular motion detectors mounted inside housing pods.
The motion detectors are used for compensating for errors caused by angular motion
of the aircraft when in the presence of strong electric field gradients. The system
also includes a total field magnetometer mounted in the aircraft. The various filtered
outputs of the magnetometer are used to provide phase and amplitude references
for the similarly filtered and angular motion corrected outputs of the electric
field sensors. The electric field data when normalized and phase referenced against
the magnetic field data provides valuable geological and geophysical information
related to the subsurface flow of telluric currents.