AXIOM GROUP is excited to offer access to NRG’s NxT™ airborne gravity system, which incorporates the iMAR iCORUS laser ring gyro strap-down gravimeter. This next-generation airborne gravity solution represents a significant advancement in airborne geophysics and was launched by New Resolution Geophysics (NRG™) in November 2020 following a comprehensive testing program.
Unlike traditional platform-based gravimeters, the iMAR iCORUS uses a laser ring gyro and strap-down Inertial Measurement Unit (IMU), eliminating the need for a mechanical orientation platform. Its design uses a triad of gyroscopes to mathematically solve for orientation, increasing stability during turbulence and rapid changes in aircraft attitude.
Equipped with a patented thermally controlled housing, the NxT™ system helps minimize long-term drift, a common challenge with traditional strap-down gravimeters. This enables low-level airborne gravity measurements with sub-milligal accuracy over a 2,800 m wavelength.
In addition, Axiom can co-collect magnetic and radiometric data without compromising the tight flight patterns essential for detailed
geophysical surveys.
The NxT’s inaugural mission in February 2021 involved a high-resolution Xplorer magnetic, radiometric, and gravity survey, providing an in-house dataset for NRG’s temperature-stabilized strap-down MEMS-based IMU gravimeter system. The results were exceptional, offering a high standard of data that aligns remarkably well with ground gravity data, showcasing the ability to capture sharp, defined airborne anomalies even in challenging weather conditions.
The NxT™ system offers multifaceted data collection capabilities, including total field magnetics and radiometrics from a heliborne platform, ensuring high resolution and quality. It operates with impressive specs: an accuracy of less than 1 mGal, drift of less than 0.5 mGal/hour, and a minimum line length of 8 km, usually independent of national bases, providing local, relative gravity readings.
AXIOM GROUP’s Magnetic surveys use the latest technology available; our in-house proprietary systems were developed (and are continually refined) by a team of highly qualified and experienced geophysicists.