Patent ID: 7002349

Claim:
An airborne exploration survey system for exploration of oil and gas, mineral deposits and aquifers, the survey system using natural electromagnetic fields as an energy source, the survey system mounted on an aircraft, the system comprising: a pair of aerodynamic housing pods adapted for mounting on wing tips of the aircraft; a pair of electric field sensors mounted on said housing pods, said field sensors including electric dipoles mounted thereon, said electric dipoles measuring electric fields in a frequency range from 0.1 Hz. to 3 Hz.; an angular motion detector mounted inside the aircraft and connected to said electric dipoles for compensating for errors caused by angular motion of the aircraft when in the presence of strong static electric field gradients above the earth's surface; and a total field magnetometer mounted inside the aircraft, said magnetometer output filtered at selective frequencies in the range of 0.1 Hz to 3.0 Hz in order to receive amplitude and phase references for electric field measurements made of the same frequencies.