Development of two axes magnetometer for navigation applications

Sreevidya, P.V.; Khan, Jakeer; Barshilia, Harish C.; Ananda, CM; Chowdhury, P.

doi:10.1016/j.jmmm.2017.08.064

Cited by 14 publications

(14 citation statements)

References 16 publications

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“…In recent years, the magnetoresistive sensors based on anisotropic magnetoresistive (AMR) have attracted great attention owing to their high sensitivity at weak magnetic fields, the flexibility of the design, and compatibility with standard microelectronics technology [1][2][3][4][5]. The magnetoresistive sensors are commonly used for magnetic bead detection [6], biosensors and biochips [7,8], applications to microcompass [9], and flexible magnetic sensors [10,11].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic magnetoresistance and planar Hall effect in magnetoresistive NiFe/Pt thin film

Demirci¹

2020

Turk J Phys

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The magnetoresistive NiFe/Pt sensor was fabricated by using standard microlithography and sputter deposition techniques and then the magnetic and magnetotransport properties were investigated. The magnetic properties of the sample show that the easy axis of magnetization prefers a predefined direction along the Hall bar. Moreover, the sample has uniaxial magnetic anisotropy due to the growth-induced magnetic anisotropy. On the other hand, the Anisotropic magnetoresistance (AMR) and the Planar Hall effect (PHE) of the sample were investigated in detail between 0°and 360°. The angle-dependent AMR and PHE signals at the in-plane magnetic field of constant magnitude intersect at certain angles. At these angles, the presence of unusual peaks and valleys was observed. This is proof that AMR and PHE curves had strongly affected each other at certain angles.

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Section: Introductionmentioning

confidence: 99%

Anisotropic magnetoresistance and planar Hall effect in magnetoresistive NiFe/Pt thin film

Demirci¹

2020

Turk J Phys

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“…A high-sensitivity magnetometer is an important instrument for weak magnetic field detection. It has great application prospects in some aspects such as auxiliary navigation, [1][2][3] the search for new physics, [4][5][6] underwater detection, [7][8][9] biomagnetic detection [10][11][12] and disease diagnosis. [13][14][15] Atomic magnetometers work based on changes in light absorption characteristics caused by atomic internal effects such as energy level shifts.…”

Section: Introductionmentioning

confidence: 99%

Design and realization of a weak magnetic fast electric heating chip

Guo¹,

Li²,

Zhao³

et al. 2021

Jpn. J. Appl. Phys.

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In a high-sensitivity atomic magnetometer, increasing the temperature of the vapor cell causes higher polarized atomic density, which enhances the intensity of the output signal. Therefore, it is essential to precisely control the temperature of the vapor cell. Based on the principle of electric heating and reverse magnetic cancellation, miniature weak magnetic electric heating chips of single-layer and double-layer structure are designed. By measuring the magnetic flux density at different distances and currents, it can be proved that the chips suppress the magnetic field. The experiment results show that the double-layer chip is better than the single-layer chip in respect of magnetic suppression and temperature response. The magnetic flux density introduced by the current at 5 mm from the chip is 0.0722 nT mA−1. These results show that a high-precision heating method for the atomic vapor cell can be realized by the double-layer meander structure, which provides a simple and fast electric heating scheme for atomic polarization.

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“…In the field of navigation technology, the triaxial magnetic measurement system, with the AMR magnetometer as the core sensor which measures the earth’s magnetic field to obtain precise directional information [ 1 ], has been widely applied to vehicle detection [ 2 ], resource exploration [ 3 ], magnetic anomaly detection and navigation [ 4 , 5 , 6 ], due to the advantages of using a magnetometer such as small space occupation, fast response speed, good anti-overload performance, low cost, etc. [ 4 , 7 ]; as well, it is used in guided munitions.…”

Section: Introductionmentioning

confidence: 99%

Two-Stage Calibration Scheme for Magnetic Measurement System on Guided Munition

Xue

Zhang

2021

Sensors

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In order to calibrate the magnetic measurement system used in guided munition on site, a two-stage calibration (TSC) scheme without reference is proposed in this paper. Analyzing the interfering magnetic field in the projectile and misalignment angles between the projectile coordinate system and measurement coordinate system establishes a proper mathematical equivalent model and derives a calibration method. The first stage is ellipsoid fitting to obtain the equivalent zero-offset, equivalent sensitivity and equivalent non-orthogonal angles of the sensor; the second stage is to calibrate the misalignment angles between the projectile coordinate system and the measurement coordinate system with the three-position calibration (TPC) method. Complete calibration is convenient to operate and does not need an additional reference, which has wide applicability. The simulation results show that the deviation in the measured value after compensation is within 100 nT. The experiment proves that the error of compensated magnetic value is about 150 nT, which meets the accuracy of requirements in guided munitions.

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Development of two axes magnetometer for navigation applications

Cited by 14 publications

References 16 publications

Anisotropic magnetoresistance and planar Hall effect in magnetoresistive NiFe/Pt thin film

Anisotropic magnetoresistance and planar Hall effect in magnetoresistive NiFe/Pt thin film

Design and realization of a weak magnetic fast electric heating chip

Two-Stage Calibration Scheme for Magnetic Measurement System on Guided Munition

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