Airborne Geophysical Surveys

Airborne Geophysical Surveys – The Helicopter Service Australia
helicopter geochemical geophysical helicopter
Airborne Geophysical Surveys.

Airborne geophysical surveying is a specialized procedure for recording the differences of multiple important physical or volcanic geothermic parameters of the planet, for mineral and mining discovery.

The Helicopter Service Australia in conjunction with the world leaders in airborne geophysical surveying offers a full range of airborne geophysical surveying methods, to our clients in the mining and mineral exploration industries.

Time is money when you are surveying in any field of exploration. With the advantage of surveying at up to 120 km per hour and at a height of 30 Mtr over any terrain:- be it swamps, marshes, hills, gullies and with the helicopters ability to land without causing any damage footprint to sensitive or historical areas gives The Helicopter Service Australia the advantage over those using fixed wing or traditional ground based explosive -echo survey methods.• Land and take off without the need for landing strips – time saved in aircraft ferry.• Real time data capture – geologists now have the ability to re-survey a particular anomaly while airborne – time saved in aircraft ferry.• Some current airborne geophysical surveying EM systems have difficulties detecting this deposit with a cigar like shape dipping vertically. The services we offer can clearly shows this type of anomaly.• System Flexibility – Computer controlled power electronics and advanced signal processing software makes the system easily adjustable to different geophysical tasks, from shallow soil mapping to deep ore bodies.• The unique aerodynamic designs of our airborne geophysical surveying are coupled to a programmable high-power transmitters. This means that geologists can map to depths previously only achieved with ground surveys (explosive sampling), with accuracies good enough to target drilling programmes – all from the convenience of a conventional helicopter.• Robust electronics and equipment enable these airborne geophysical surveying systems to operate consistantly in remote areas.

measuringfly-over

Main components:
• Highly-sensitive magnetometers
• A differential GPS navigation system accuracy 
• A radar altimeter

Systems
• Deep penetration (results of 300 mtr plus are not unusual)
• High spatial resolution (deep penetration)
• Excellent resistivity discrimination (Method and apparatus for measuring resistivity of an earth formation)
• Detection of weak reflections

Electronic Navigation – GPS
• Utilizing NovAtel’s WAAS (Wide Area Augmentation System) enabled OEM4-G2-3151W GPS receiver provides in-flight navigation control. 
• This system determines the absolute position of the helicopter in three dimensions
• As many as 11 GPS and two WAAS satellites may be monitored at any one time.
• The positional accuracy or circular error probability (CEP) is 1.8 m, with WAAS active, it is 1.2 m.

Altimeter 
• Accuracy of approximately 1 mPlease Contact us for more information

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