Direction finding of moving ferromagnetic objects inside water by magnetic anomaly

Ege, Yavuz; Kalender, Osman; Nazlibilek, Sedat

doi:10.1016/j.sna.2008.03.010

Cited by 20 publications

(18 citation statements)

References 5 publications

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“…9) Magnetostatic dipole field or field gradient: It is a method used in practice based on the field gradient. The inversion of the magnetostatic dipole field or field gradient is a necessary first step toward determining object location and identity [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis for Remote Identification of Materials With Magnetic Characteristics

Ege

Şensoy

Kalender³

et al. 2011

IEEE Trans. Instrum. Meas.

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Abstract-There is a variety of methods used for remote sensing of objects such as acoustic, ground penetration radar detection, electromagnetic induction spectroscopy, infrared imaging, thermal neutron activation, core four-pole resonance, neutron backscattering, X-ray backscattering, and magnetic anomaly. The method that has to be used can be determined by the type of material, geographical location (underground or water), etc. Recent studies have been concentrated on the improvement of the criteria such as sensing distances, accuracy, and power consumption. In this paper, anomalies created by materials with magnetic characteristics at the perpendicular component of the Earth magnetic field have been detected by using a KMZ51 anisotropic magnetoresistive sensor with high sensitivity and low power consumption, and also, the effects of physical properties of materials on magnetic anomaly have been investigated. By analyzing the graphics obtained by 2-D motion of the sensor over the material, the most appropriate mathematical curves and formulas have been determined. Based on the physical properties of the magnetic material, the variations of the variables constituting the formulas of the curves have been analyzed. The contribution of this paper is the use of the results of these analyses for the purpose of identification of an unknown magnetic material. This is a new approach for the detection and determination of materials with magnetic characteristics by sensing the variation at the perpendicular component of the Earth magnetic field. The identification process has been explained in detail in this paper.Index Terms-Anisotropic magnetoresistive sensor (AMR), magnetic anomaly, magnetic materials, power consumption, remote sensing.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis for Remote Identification of Materials With Magnetic Characteristics

Ege

Şensoy

Kalender³

et al. 2011

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…The works made previously by some researchers are depended on gathering information by a single magnetic sensor [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…The parameters, material type and length, can be identified in similar fashion. The principles for the determination of these parameters can be found in our previous study [1].…”

Section: Introductionmentioning

confidence: 99%

“…One is the ''active detection" and another is the ''passive detection". Recently, there are new approaches to detect or estimate targets and their motions [1]. A sonar system that sends acoustic waves and receives the reflected waves inside the water is an example of active detection systems.…”

Section: Introductionmentioning

confidence: 99%

“…This is another requirement for us for the detection of the object with high certainty. As it is showed in [1] that one of the methods applied for satisfying these requirements is the utilization of magnetic anomaly. In that paper, a single sensor positioned carefully in a suitable location inside homogeneous magnetic field is used to detect the moving object.…”

Section: Introductionmentioning

confidence: 99%

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