FALCON test results from the Bathurst Mining camp

Dransfield, Mark; Christensen, Asbjørn Nørlund; Rose, Marion; Stone, P.; Diorio, Peter

doi:10.1071/aseg2001ab032

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Brett gives a more detailed account on the workings of the system [ 8 , 9 ]. The PTGG (FALCON

AGG, with 8 Bell model VII-G accelerometers) was jointly developted by Lockheed Martin and BHP Billiton in the late 1990s, with a noise density is 13Eu/

, and it came into service after a two-year flight test [ 10 , 11 ]. Its basic design consists of eletronically matched pairs of accelerometers, and its outputs are differenced to produce a gravity gradient.…”

Section: Introductionmentioning

confidence: 99%

Frequency Domain Analysis of Partial-Tensor Rotating Accelerometer Gravity Gradiometer

Qian

Zhao

Liu

et al. 2021

Sensors

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The output model of a rotating accelerometer gravity gradiometer (RAGG) established by the inertial dynamics method cannot reflect the change of signal frequency, and calibration sensitivity and self-gradient compensation effect for the RAGG is a very important stage in the development process that cannot be omitted. In this study, a model based on the outputs of accelerometers on the disc of RGAA is established to calculate the gravity gradient corresponding to the distance, through the study of the RAGG output influenced by a surrounding mass in the frequency domain. Taking particle, sphere, and cuboid as examples, the input-output models of gravity gradiometer are established based on the center gradient and four accelerometers, respectively. Simulation results show that, if the scale factors of the four accelerometers on the disk are the same, the output signal of the RAGG only contains (4k+2)ω ( ω is the spin frequency of disc for RAGG) harmonic components, and its amplitude is related to the orientation of the surrounding mass. Based on the results of numerical simulation of the three models, if the surrounding mass is close to the RAGG, the input-output models of gravity gradiometer are more accurate based on the four accelerometers. Finally, some advantages and disadvantages of cuboid and sphere are compared and some suggestions related to calibration and self-gradient compensation are given.

show abstract

“…Brett gives a more detailed account on the workings of the system [ 8 , 9 ]. The PTGG (FALCON

AGG, with 8 Bell model VII-G accelerometers) was jointly developted by Lockheed Martin and BHP Billiton in the late 1990s, with a noise density is 13Eu/

Section: Introductionmentioning

confidence: 99%

Frequency Domain Analysis of Partial-Tensor Rotating Accelerometer Gravity Gradiometer

Qian

Zhao

Liu

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…Some examples include airborne gravity gradiometry (DRANSFIELD et al , 2001), Differential Global Positioning Systems (DGPS), Geographic Information Systems (GIS) integration, radiometric noise reduction (MINTY & McFADDEN , 1998), 3D electrical acquisition (WHITE et al , 2003), 3D seismic acquisition, and 3D inversions of potential field and electrical data.…”

Section: Introductionmentioning

confidence: 99%