[1] WILSON H.Analysis of the magnetic gradient tensor［J］.Canada Technical Memorandum, 1985, 85(13):47.
[2] LEE K M, LI M.Magnetic tensor sensor for gradient-based localization of ferrous object in geomagnetic field［J］.IEEE Transactions on Magnetics, 2016, 52(8):4002610.
[3] CLARK D A.New methods for interpretation of magnetic vector and gradient tensor data I:eigenvector analysis and the normalized source strength［J］.Exploration Geophysics, 2014, 45(4):267-282.
[4] WYNN W M.Magnetic dipole localization using the gradient rate tensor measured by a five-axis gradiometer with known velocity ［J］.Proceedings of SPIE-The International Society for Optical Engineering, 1995, 2496：357-367.
[5] WYNN W M, FRAHM C P, CARROLL P J, et al.Advanced super-conducting gradiometer/magnetometer arrays and a novel signal processing technique［J］.IEEE Transactions on Magnetics, 1975, 11(2):701-707.
[6] TAKAAKI N, SUZUKI S, ANDO S.A closed form formula for magnetic dipole localization by measurement of its magnetic field and spatial gradients ［J］.IEEE Transactions on Magnetics, 2006, 42(10):3291-3293.
[8] BIRSAN M.Recursive Bayesian method for magnetic dipole tracking with a tensor gradiometer ［J］.IEEE Transactions on Magnetics, 2011, 47(2)：409-415.
[9] HEATH P, HEINSON G, GREENHALGH S.Some comments on potential field tensor data ［J］.Exploration Geophysics, 2003, 34(2)：57-62.
[11] WIEGERT R.Magnetic STAR technology for real-time localization and classification of unexploded ordnance and buried mines ［J］.Proceedings of SPIE-The International Society for Optical Engineering, 2009, 7303:1-9.
[12] WIEGERT R, OESCHGER J.Portable magnetic gradiometer for real-time localization and classification of unexploded ordnance［C］//MTS/IEEE Oceans Conference Exhibit.Boston, MA:IEEE, 2006:1-6.
