Validation of a Source Identification Method for Prediction of Low-Frequency Magnetic Fields in Space Missions

Specific care is required for recent and upcoming space missions regarding magnetic cleanliness of slowly time-varying magnetic fields. The sources of these very low frequency fields may be approximated with multiple dipole sources, and their parameters can be identified from near magnetic field measurements. In this letter, a practical method is discussed and analyzed for on-ground verification of low-frequency ac magnetic fields at the unit and system level, complementing the well-established dc magnetic cleanliness verification methods. The developed method entails the identification of the parameters of a magnetic dipole model in the frequency domain that can be later used to represent real spacecraft equipment. Furthermore, near magnetic field measurements of a current-fed coil are used to validate the method.

[1]  D. Müller,et al.  Solar Orbiter , 2012, Solar Physics.

[2]  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.

[3]  K. Mehlem,et al.  Multiple magnetic dipole modeling and field prediction of satellites , 1978 .

[4]  Nikolaos C. Kapsalis,et al.  PREDICTION OF MULTIPLE MAGNETIC DIPOLE MODEL PARAMETERS FROM NEAR FIELD MEASUREMENTS EMPLOYING STOCHASTIC ALGORITHMS , 2012 .

[5]  Jürgen Hesser,et al.  Real-Time ECG Emulation: A Multiple Dipole Model for Electrocardiography Simulation , 2009, MMVR.

[6]  Siming Pan,et al.  An equivalent three-dipole model for IC radiated emissions based on TEM cell measurements , 2010, 2010 IEEE International Symposium on Electromagnetic Compatibility.

[7]  G. Yin,et al.  A closed-form formula for magnetic dipole localization by measurement of its magnetic field vector and magnetic gradient tensor , 2020 .

[8]  A. Monorchio,et al.  Particle Swarm Optimization to solve Multiple Dipole Modelling problems in space applications , 2012, 2012 ESA Workshop on Aerospace EMC.

[9]  F. Marliani,et al.  Prediction of DC magnetic fields for magnetic cleanliness on spacecraft , 2011, 2011 IEEE International Symposium on Electromagnetic Compatibility.

[10]  H. Knoepfel.  Magnetic Fields: A Comprehensive Theoretical Treatise for Practical Use , 2000 .

[11]  C. Germain.  MEASUREMENT OF MAGNETIC FIELDS , 1967 .

[12]  S. Weikert,et al.  Spacecraft magnetic cleanliness prediction and control , 2012, 2012 ESA Workshop on Aerospace EMC.

[13]  R. Fox,et al.  Classical Electrodynamics, 3rd ed. , 1999 .