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Improving the measurement accuracy of magnetometer algorithmic correction of its instrumental errors
https://doi.org/10.32446/0368-1025it.2020-5-50-57
Abstract
In many applications of the magnetic method it is advantageous to have information about the geomagnetic field strength and its gradients. The direct measurement of gradients does not depend on geomagnetic variations or normal field values. Special equipment is required for this purpose. The results of the development and construction of a three-component magnetometergradiometer are presented. The device is designed to measure on the earth's surface the absolute values of the three components of the geomagnetic field vector and the corresponding three components of the gradient. Installation of additional measuring sensors in the device – accelerometers, allows you to calculate the orientation of these vectors in space. The device of a magnetometergradiometer is described, its functional scheme and operating principle are presented. A set of instrumental errors that occur in the manufacture of three-axis systems of ferrosondesand accelerometers for measuring the components of the geomagnetic field strength and determining the orientation of the device is considered. The paper presents a method for determining instrumental errors and algorithmic correction of information signals coming from measuring sensors to signifi cantly improve the accuracy of measurements. Examples of field tests of the device are given. The presented magnetometer-gradiometer can be used for accurate localization of previously identified ore bodies and determining the details of their structure.
About the Authors
Yu. G. Astrakhantsev
The Institute of Geophysics named after Y. P. Bulashevich Ural branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Yury G. Astrakhantsev
Yekaterinburg
N. A. Beloglazova
The Institute of Geophysics named after Y. P. Bulashevich Ural branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Nadezhda A. Beloglazova
Yekaterinburg
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Review
For citations:
Astrakhantsev Yu.G., Beloglazova N.A. Improving the measurement accuracy of magnetometer algorithmic correction of its instrumental errors. Izmeritel`naya Tekhnika. 2020;(5):50-57. (In Russ.) https://doi.org/10.32446/0368-1025it.2020-5-50-57
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