Integrated Compensation of Magnetometer Array Magnetic Distortion Field and Improvement of Magnetic Object Localization

A fluxgate magnetometer array for magnetic object localization is designed, where hard-iron and soft-iron magnetic distortion fields are the major factors influencing measurement accuracy. A vector compensation method is proposed to suppress error, in which magnetometer error, misalignment error, and magnetic distortion fields are considered. The experimental system mainly consists of a plane cross magnetometer array, a magnet (to be hard-iron), a steel block (to be soft-iron), and a deployment platform (to change the attitude of the magnetometer array). Experimental results show that integrated compensation parameters can be obtained accurately, and array difference errors are reduced about two orders, thus proving the effectiveness of the vector compensation method. The compensated array is used for static and dynamic localization in 3-D. In static situation, localization errors are reduced from 0.17 m, 0.28 m, and 0.27 m to 0.03 m, 0.05 m, and 0.14 m, respectively. On the object deployment trace, error intensity is reduced from 0.17 to 0.04 m. In particular, the dynamic localization results are unreliable without compensation, and the error intensity is reduced from 2.47 to 0.05 m using the proposed method, thus improving the localization accuracy.

[1]  Jun Korenaga,et al.  Comprehensive analysis of marine magnetic vector anomalies , 1995 .

[2]  A. Chwala,et al.  Magnetic full-tensor SQUID gradiometer system for geophysical applications , 2006 .

[3]  Nan Zou,et al.  Detection of ship wake using an airborne magnetic transducer , 1998 .

[4]  Andrew A. Thompson.  Calibration of an Orthogonal Cluster of Magnetic Sensors , 2009 .

[5]  Marc Munschy,et al.  Magnetic mapping for the detection and characterization of UXO: Use of multi-sensor fluxgate 3-axis magnetometers and methods of interpretation , 2007 .

[6]  M. Wynn,et al.  Advanced superconducting gradiometer/Magnetometer arrays and a novel signal processing technique , 1975 .

[7]  Yuanxin Wu,et al.  Calibration of Three-Axis Magnetometer Using Stretching Particle Swarm Optimization Algorithm , 2013, IEEE Transactions on Instrumentation and Measurement.

[8]  Sangkyung Sung,et al.  Error Calibration of Magnetometer Using Nonlinear Integrated Filter Model With Inertial Sensors , 2009, IEEE Transactions on Magnetics.

[9]  Feilu Luo,et al.  Reduction of Lift-Off Effects in Pulsed Eddy Current for Defect Classification , 2011, IEEE Transactions on Magnetics.

[10]  S. Bickel,et al.  Small Signal Compensation of Magnetic Fields Resulting from Aircraft Maneuvers , 1979, IEEE Transactions on Aerospace and Electronic Systems.

[11]  Feilu Luo,et al.  Calibration of a fluxgate magnetometer array and its application in magnetic object localization , 2013 .

[12]  Wang Shilong,et al.  An Analysis and Elimination of Zero Drift in Magnetic Gradient Tensor Exploration System , 2011, 2011 Third International Conference on Measuring Technology and Mechatronics Automation.

[13]  Paul Graven,et al.  Laboratory (and On-Orbit) Magnetometer Calibration without Coil Facilities or Orientation Information , 1996 .

[14]  Paul Leliak,et al.  Identification and Evaluation of Magnetic-Field Sources of Magnetic Airborne Detector Equipped Aircraft , 1961, IRE Transactions on Aerospace and Navigational Electronics.

[15]  Stephen D. Billings,et al.  Discrimination and classification of buried unexploded ordnance using magnetometry , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[16]  Demoz Gebre-Egziabher,et al.  Magnetometer Autocalibration Leveraging Measurement Locus Constraints , 2007 .

[17]  James R. McDonald,et al.  Using physics-based modeler outputs to train probabilistic neural networks for unexploded ordnance (UXO) classification in magnetometry surveys , 2001, IEEE Trans. Geosci. Remote. Sens..

[18]  Fritz Primdahl,et al.  Magnetic Calibration Of Vector Magnetometers: Linearity, Thermal Effects and Stability, ESA SP-490 , 2001 .

[19]  S. Kumar,et al.  Real-time tracking magnetic gradiometer for underwater mine detection , 2004, Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600).

[20]  Jan Včelák,et al.  Calibration of triaxial fluxgate gradiometer , 2006 .

[21]  Feilu Luo,et al.  A New Calibration Method of Three Axis Magnetometer With Nonlinearity Suppression , 2013, IEEE Transactions on Magnetics.

[22]  S. Ando,et al.  A Closed-Form Formula for Magnetic Dipole Localization by Measurement of Its Magnetic Field and Spatial Gradients , 2006, IEEE Transactions on Magnetics.

[23]  Valérie Renaudin,et al.  Complete Triaxis Magnetometer Calibration in the Magnetic Domain , 2010, J. Sensors.

[24]  G.H. Elkaim,et al.  Extension of a two-step calibration methodology to include nonorthogonal sensor axes , 2008, IEEE Transactions on Aerospace and Electronic Systems.

[25]  Fritz Primdahl,et al.  Ørsted Pre-Flight Magnetometer Calibration Mission , 2003 .

[26]  Barrie W. Leach,et al.  AEROMAGNETIC COMPENSATION AS A LINEAR REGRESSION PROBLEM , 1980 .

[27]  T. Inaba,et al.  Magnetic detection of a surface ship by an airborne LTS SQUID MAD , 2001 .

[28]  M Birsan,et al.  Recursive Bayesian Method for Magnetic Dipole Tracking With a Tensor Gradiometer , 2011, IEEE Transactions on Magnetics.

[29]  M. Lassahn,et al.  Vectorial calibration of 3-D magnetic field sensor arrays , 1994, Proceedings of Conference on Precision Electromagnetic Measurements Digest.

[30]  Mao Li,et al.  A Cubic 3-Axis Magnetic Sensor Array for Wirelessly Tracking Magnet Position and Orientation , 2010, IEEE Sensors Journal.

[31]  Sean Walker,et al.  Magnetic models of unexploded ordnance , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[32]  Feilu Luo,et al.  Calibration of three-axis fluxgate magnetometers with nonlinear least square method , 2013 .

[33]  Nobuhiro Isezaki,et al.  A new shipboard three-component magnetometer , 1986 .

[34]  U. Ausserlechner,et al.  Precise Alignment of a Magnetic Sensor in a Coordinate Measuring Machine , 2010, IEEE Sensors Journal.

[35]  S. Bickel,et al.  Error Analysis of an Algorithm for Magnetic Compensation of Aircraft , 1979, IEEE Transactions on Aerospace and Electronic Systems.

[36]  Fritz Primdahl,et al.  In-Flight Calibration Methods Used For The Ørsted Mission , 2001 .

[37]  Marc Munschy,et al.  Deep-tow 3C magnetic measurement: Solutions for calibration and interpretation , 2013 .

[38]  M. W..  Magnetic Dipole Localization With a Gradiometer : Obtaining Unique Solutions , .

[39]  Demoz Gebre-Egziabher,et al.  Calibration of Strapdown Magnetometers in Magnetic Field Domain , 2006 .

[40]  G. Trenkler,et al.  Vectorial calibration of 3-D magnetic field sensor arrays , 1994 .

[41]  James R. McDonald,et al.  Multisensor towed array detection system for UXO detection , 2001, IEEE Trans. Geosci. Remote. Sens..

[42]  Hans-Ulrich Auster,et al.  Calibration of flux-gate magnetometers using relative motion , 2002 .

[43]  Feilu Luo,et al.  Calibration of three-axis magnetometers with differential evolution algorithm , 2013 .

[44]  Carlos Silvestre,et al.  Geometric Approach to Strapdown Magnetometer Calibration in Sensor Frame , 2011, IEEE Transactions on Aerospace and Electronic Systems.