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Gravimeter
Gravimeters are specialized accelerometers used to measure local gravity or variations in the gravitational field of the Earth. High-performance gravimeters and gravity gradiometers are well-suited for applications such as geophysical and geodetic surveying, precision navigation, exploration for natural resources, and underground fluid monitoring. Such sensors may also be useful for identifying special nuclear materials, treaty verification, and void detection.
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Quantum Gravimeter
The quantum gravimeter, the first commercial device of its kind in the UK, uses quantum interference of matter waves to measure the local value of gravitational acceleration, or ‘g’, with very high precision. Objects with different mass cause small fluctuations in the value of g measured on the surface of the Earth. The quantum gravimeter can be used to sense these objects hidden under the surface in a non-intrusive manner.
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Airborne Gravimeter
GT-1A
The GT-1A airborne gravimeter brings proven design and fully automatic operation to mobile scalar gravity measurement. Intelligent Platform Control combined with continuously recorded wide dynamic range allows the collection of high quality data through periods of turbulence. Proprietary software provides on-side delta-g values for post-flight evaluation.
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Marine Gravimeter
GT-2M
The GT-2M marine gravimeter brings proven design and fully automatic operation to marine gravity measurement. Intelligent Platform Control and 4 programmable filters running simultaneously allow the collection of high quality data on vessels of any size through periods of high sea states. Proprietary software provides real-time relative free-air gravity values at a selectable recording rate for continuous data evaluation.
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Airborne Gravimeter
GT-2A
The very large dynamic range provides high precision data even in turbulent flying conditions; data is acquired through short periods of saturation in extreme turbulence by the automatic application of a reduced order Kalman filter, enabling platform misalignment to be computed and hence controlled; the automatic calibration program computes accelerometer scale factors and errors in perpendicularity between the accelerometer sensitive axis and the platform surface. The GT-2A installation in a fixed wing aircraft is shown in Fig 1 (courtesy of Excalibur).
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Absolute Quantum Gravimeter
The Absolute Quantum Gravimeter is the only quantum gravity sensor available on the market place. Thanks to its disruptive technology, this instrument offers unique features:*Absolute gravity measurement at the µGal level.*Automated Continuous Data Acquisition for several months. No long-term drift.*Excellent immunity to ground vibrations thanks to an active compensation system (no mechanical isolation).*Easy and quick operation : the AQG is ready to measure within 1h (no laser alignment nor mechanical assembling, no preliminary pumping, no superspring). User-friendly software requiring no knowledge in quantum physics.*Compact and transportable sensor.*Low maintenance constraints (in particular, no moving parts in our vacuum chamber).*Station to station repeatability of the absolute measurement within a few μGal.
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Quantum Products
M Squared provides a range of quantum products, including integrated systems (quantum accelerometers, gravimeters and clocks) as well as optical systems and electronics for businesses and institutions globally.
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Dynamic Gravity Meter
TAGS-7
TAGS-7 represents the latest development in a long line of LaCoste-based airborne gravity systems, stretching back to the first successful airborne gravity flights in 1958 and building on the success of the TAGS System. For over 50 years, LaCoste gravimeters have acquired hundreds of thousands of line kilometers of gravity data during academic, government, and commercial surveys. TAGS-7 blends the latest in GPS and data acquisition technology with the solid foundation of the LaCoste dynamic gravimeter.TAGS-7 is an upgrade to the TAGS-6 gravity meter, and is designed specifically for airborne operations. The system incorporates a time-tested, low-drift, zero-length-spring gravity sensor mounted on a gyro-stabilized gimbal platform. The sensor has a worldwide gravity measuring range (no reset necessary) of 500,000 milliGals.
