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Magnetometers may also be classified by their situation or intended use. Stationary magnetometers are installed to a fixed position and measurements are taken while the magnetometer is stationary. [4] Portable or mobile magnetometers are meant to be used while in motion and may be manually carried or transported in a moving vehicle.
In 1958 Glenn A. Black and Eli Lilly, following the work of Martin Aitken and his associates at the Oxford University (UK) Archaeometric Laboratory, used proton magnetometers to locate and map buried archaeological features, including iron objects in the soil, thermoremanent magnetization of fired clays, and differences in the magnetic susceptibility of disturbed soils.
The majority of early fluxgate magnetometers on spacecraft were made as vector sensors. However, the magnetometer electronics created harmonics which interfered with readings. Properly designed sensors had feedback electronics to the detector that effectively neutralized the harmonics. Mariner 1 and Mariner 2 carried fluxgate-vector sensor ...
The instrument's main magnetic measurements were calculated from three Ames fluxgate magnetometer sensor heads, located at the end of three 100 cm (39 in) booms, positioned perpendicular to each other. [1] Each sensor consists of a flattened toroidal core made of permalloy tape placed inside a wound sensing element.
The term typically refers to magnetometers used by military forces to detect submarines (a mass of ferromagnetic material creates a detectable disturbance in the magnetic field). Military MAD equipment is a descendant of geomagnetic survey or aeromagnetic survey instruments used to search for minerals by detecting their disturbance of the ...
More exceptionally, magnetometers are used for low-resolution exploratory surveys. Several types of magnetometer are used in terrestrial archaeology. Early surveys, beginning in the 1950s, were conducted with proton precession magnetometers. Data collection with proton precession instruments was slow, making high sample density surveys ...
Magnetometers, instruments for measuring magnetic fields. Pages in category "Magnetometers" The following 8 pages are in this category, out of 8 total.
The magnetometers were deployed after launch to a position 6 m (20 ft) behind the spacecraft. At this distance, the influence of magnetic materials from the instrument and base module (chiefly from the star cameras) was less than 1 mT. Sixteen complete vector magnetic field measurements and eight scalar measurements were obtained every second. [3]