Mapping the magnetic field using a magnetometer array with noisy input Gaussian process regression

• URL: http://arxiv.org/abs/2310.16577v1
• Date: Wed, 25 Oct 2023 12:00:45 GMT
• Title: Mapping the magnetic field using a magnetometer array with noisy input Gaussian process regression
• Authors: Thomas Edridge and Manon Kok
• Abstract summary: A Gaussian process can be used to learn the spatially varying magnitude of the magnetic field. The position of the magnetometer, however, is frequently only approximately known. In this paper, we investigate how an array of magnetometers can be used to improve the quality of the magnetic field map.
• Score: 1.0878040851637998
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Ferromagnetic materials in indoor environments give rise to disturbances in the ambient magnetic field. Maps of these magnetic disturbances can be used for indoor localisation. A Gaussian process can be used to learn the spatially varying magnitude of the magnetic field using magnetometer measurements and information about the position of the magnetometer. The position of the magnetometer, however, is frequently only approximately known. This negatively affects the quality of the magnetic field map. In this paper, we investigate how an array of magnetometers can be used to improve the quality of the magnetic field map. The position of the array is approximately known, but the relative locations of the magnetometers on the array are known. We include this information in a novel method to make a map of the ambient magnetic field. We study the properties of our method in simulation and show that our method improves the map quality. We also demonstrate the efficacy of our method with experimental data for the mapping of the magnetic field using an array of 30 magnetometers.

Related papers

• Generalized Gouy Rotation of Electron Vortex beams in uniform magnetic fields [54.010858975226945]
  We study the dynamics of EVBs in magnetic fields using exact solutions of the relativistic paraxial equation in magnetic fields. We provide a unified description of different regimes under generalized Gouy rotation, linking the Gouy phase to EVB rotation angles. This work offers new insights into the dynamics of EVBs in magnetic fields and suggests practical applications in beam manipulation and beam optics of vortex particles.
  arXiv  Detail & Related papers  (2024-07-03T03:29:56Z)
• Quantum magnetometry using discrete-time quantum walk [2.732919960807485]
  We propose a scheme for quantum magnetometry using discrete-time quantum walk (DTQW) The dynamics of a spin-half particle implementing DTQW on a one-dimensional lattice gets affected by magnetic fields. We find that one can use the position and spin measurements to estimate the strengths of the magnetic fields.
  arXiv  Detail & Related papers  (2023-11-27T13:23:33Z)
• Zero-field optical magnetometer based on spin-alignment [0.2407976495888858]
  This research focuses on utilizing a spin-aligned atomic ensemble for magnetometry at zero-field. The sensitivity and bandwidth of the magnetometer are characterized based on the detected polarization rotation signal. Lastly, the practical utility of the magnetometer for medical applications is demonstrated by successfully detecting a synthetic cardiac signal.
  arXiv  Detail & Related papers  (2023-08-23T16:15:10Z)
• Tensor gradiometry with a diamond magnetometer [0.0]
  We present a scanning fiber-coupled nitrogen vacancy (NV) center vector magnetometer. We calculate the magnetic tensor gradiometry images in real time, and they allow us to detect smaller damage than is possible with vector or scalar imaging.
  arXiv  Detail & Related papers  (2023-07-11T17:03:56Z)
• Imaging magnetism evolution of magnetite to megabar pressure range with quantum sensors in diamond anvil cell [57.91882523720623]
  We develop an in-situ magnetic detection technique at megabar pressures with high sensitivity and sub-microscale spatial resolution. We observe the macroscopic magnetic transition of Fe3O4 in the megabar pressure range from strong ferromagnetism (alpha-Fe3O4) to weak ferromagnetism (beta-Fe3O4) and finally to non-magnetism (gamma-Fe3O4) The presented method can potentially investigate the spin-orbital coupling and magnetism-superconductivity competition in magnetic systems.
  arXiv  Detail & Related papers  (2023-06-13T15:19:22Z)
• Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
  cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
  arXiv  Detail & Related papers  (2022-07-08T11:28:31Z)
• DC Quantum Magnetometry Below the Ramsey Limit [68.8204255655161]
  We demonstrate quantum sensing of dc magnetic fields that exceeds the sensitivity of conventional $Tast$-limited dc magnetometry by more than an order of magnitude. We used nitrogen-vacancy centers in a diamond rotating at periods comparable to the spin coherence time, and characterize the dependence of magnetic sensitivity on measurement time and rotation speed.
  arXiv  Detail & Related papers  (2022-03-27T07:32:53Z)
• Surpassing the Energy Resolution Limit with ferromagnetic torque sensors [55.41644538483948]
  We evaluate the optimal magnetic field resolution taking into account the thermomechanical noise and the mechanical detection noise at the standard quantum limit. We find that the Energy Resolution Limit (ERL), pointed out in recent literature, can be surpassed by many orders of magnitude.
  arXiv  Detail & Related papers  (2021-04-29T15:44:12Z)
• Ferromagnetic Gyroscopes for Tests of Fundamental Physics [49.853792068336034]
  A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum is dominated by electron spin polarization and that will precess under the action of an external torque. We model and analyze FG dynamics and sensitivity, focusing on practical schemes for experimental realization.
  arXiv  Detail & Related papers  (2020-10-17T07:13:50Z)
• Signal Enhancement for Magnetic Navigation Challenge Problem [2.1374806859886495]
  This paper aims to decouple the earth and aircraft magnetic signals in order to derive a clean signal from which to perform magnetic navigation. Baseline testing on the dataset shows that the earth magnetic field can be extracted from the total magnetic field using machine learning (ML) The challenge is to remove the aircraft magnetic field from the total magnetic field using a trained neural network.
  arXiv  Detail & Related papers  (2020-07-23T17:44:02Z)
• Single-spin scanning magnetic microscopy with radial basis function reconstruction algorithm [21.678442505821835]
  We present a scheme to image a millitesla magnetic field by tracking the magnetic resonance frequency. The radial basis function algorithm is employed to reconstruct the magnetic field from the contour lines. Our scheme had a maximum detectable magnetic field gradient of 0.86 mT per pixel.
  arXiv  Detail & Related papers  (2020-02-27T10:33:23Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.