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:  122
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:  2026
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(.):  dipole magnetic moment, tensor magnetic gradiometer, vector magnetic gradiometer
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(.):  The paper investigates the problem of detecting moving objects using tensor and vector magnetic gradient measurements. A distinctive feature of the approach considered in this paper is the use of a point magnetic dipole approximation, which allows to pose the detection problem in a linear formulation only. Equations that relate tensor and vector measurements of the magnetic field gradient with the parameters of the moving object's dipole magnetic moment are derived. A detailed analysis of these equations is provided, and algorithms for solving the detection problem for vector and tensor measurements based on them are given. Numerical examples show that, under certain conditions, the obtained algorithms can determine both the direction to a magnetic object and its dipole magnetic moment. The use of additional information, such as the distance to the moving object and measurements of the components of its magnetic field, to solve the detection problem is described. Finally, the accuracy of determination of the moving object's parameters and its dependence on the magnetic sensors performance and environmental conditions are discussed.

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