EDCON-PRJ provides comprehensive assistance from the initial design of the survey through the final interpretation to clients planning airborne surveys. Services include survey planning, magnetic and radiometric data acquisition, data processing, and interpretation.
By far the largest number of surveys and quantity of data are acquired utilizing fixed-wing aircraft. The sensor is typically mounted in a tube aft of the aircraft called a stinger to minimize the effect of the aircraft’s magnetic field.
Using a fixed-wing aircraft, large areas can be covered economically and rapidly. Because the measurements are made from the air, issues of land access and the effects of ground clutter are avoided. EDCON-PRJ has conducted over 100 fixed-wing surveys in North America over the past ten years. Our experience in survey design, acquisition and processing of this data ensures our clients a successful geophysical program. Cessna 180 SpecSheet
Helicopters are used for low-level surveys in terrain that would be impossible to follow in a fixed-wing aircraft. Helicopter surveys are conducted with a magnetometer sensor slung from a long cable below the vehicle, or in a forward- mounted stinger. Although helicopters have significantly higher operating costs than fixed-wing aircraft, our ability to mobilize equipment and aircraft quickly and acquire data efficiently allows for a very good return on the investment for detailed surveys in rugged terrain. Helicopter Surveys Spec Sheet
Drape Height and Survey Design
Most surveys require that the aircraft be flown at a constant altitude above terrain while acquiring data. We conduct fixed-wing and helicopter surveys using pre-programmed drape surfaces. These navigation systems provide our pilots three-dimensional guidance with the highest resolution and accuracy available today, while incorporating each specific aircraft’s safe flight characteristics.
Magnetic survey design is driven by a combination of technical and practical considerations. Each survey is different, and special circumstances in any given area may dictate a different approach to the survey layout. At EDCON-PRJ, we have over 40 years experience designing the optimal survey for your projects specific needs. A detailed discussion of Magnetic Survey Design, by Dr. Richard A. Hansen, is offered here.
EDCON-PRJ is a member of the International Airborne Geophysics Safety Association and subscribes to its safety procedures and policies. Our safety plan for each project includes:
1. A review of the survey area by staff and pilots for risk assessment,drape considerations and public safety.
2. An autonomous data acquisition system so that the pilot is the only person on-board during survey operations.
3. Daily inspection of equipment and aircraft for performance and operational safety.
4. Daily flight and safety planning with crew prior to takeoff.
5. Real-time weather radar and surface conditions reporting through satellite service.