Abstract
In order to achieve a comprehensive analysis of the influencing factors on the accuracy of the magnetic gradient full tensor measurement system, an orthogonal experimental design method is proposed to analyze the errors caused by the influencing factors. The influence of each factor on the accuracy of the measurement system is obtained more comprehensively. Furthermore, the relative degree of influence of the factor is obtained. Four factors including resolution, baseline length, measurement distance, and magnetic moment direction are selected for simulation calculation. The simulation results and analysis show that among the selected factors, the resolution has the greatest influence on the accuracy of the measurement system and the magnetic moment direction has the least influence. In the actual measurement system design, if the optimal configuration of the four factors cannot be satisfied, the former can be satisfied in priority in the order of resolution, measurement distance, baseline length, and magnetic moment direction.
Highlights
A magnetic body generates a magnetic field under the action of the Earth’s magnetic field, which distorts the Earth’s magnetic field
This paper proposes to use the method of orthogonal design experiment to comprehensively analyze the influencing factors of the magnetic gradient full tensor measurement system
This paper proposes an orthogonal experimental design method to analyze the factors that affect the accuracy of the magnetic gradient full tensor measurement system
Summary
A magnetic body generates a magnetic field under the action of the Earth’s magnetic field, which distorts the Earth’s magnetic field. References and analyzed the influence of factors such as the accuracy of the magnetic probe, the length of the measurement baseline, and the target distance on the tensor positioning accuracy; Chaoqun et al. analyzed the error caused by the four influencing factors during multi-point magnetic dipole measurement, and a correction method was proposed. The conclusion is generally that the higher the accuracy of the fluxgate, the shorter the baseline and the closer the measurement distance, the higher the detection accuracy; the longer the baseline length, the farther the measurement distance It only stayed at the stage of error analysis of a single impact factor, and a comprehensive analysis of impact factors was not conducted, let alone determination of the degree of impact of such factors.
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