Morphological Inversion Initial Model Position Estimation Method
DOI:
https://doi.org/10.54097/ajst.v2i1.903Keywords:
Shape inversion, Physical property inversion, Magnetic targets, Magnetic gradient tensor, Prior.Abstract
The shape inversion method can clearly invert the three-dimensional attitude of the magnetic target, but the shape inversion needs to obtain the position information of the magnetic target to be measured. In order to better determine the magnetic target position information, a magnetic target morphology inversion method is proposed, which fuses the physical property inversion results. The center position of the magnetic target is calculated by the physical property inversion method; the initial model is set, the module growth selection function is established by using the L2 norm and the distance constraint function, and the optimal growth module in the morphological inversion process is selected; through continuous iterative update, the magnetic The 3D pose of the target. The position error calculated by this method is less than 10% of the actual value, and the inversion coincidence rate is greater than 80%. The results show that this method can effectively improve the accuracy of morphology inversion.
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References
LI Q Z,LI Z N,ZHANG Y T,YIN G,FAN H B. Research Progress of Magnetic Gradient Tensor System and its Error Calibration [J].Journal of Academy of Armored Force Engineering. 2017(06) Page:72-81.
ZHOU P Z,LI Z Y,SHEN Z Z,YIN Z X,LU X Y,HE H Z,DONG C. Research and application of magnetic detection technology for submarine optical cable[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni.2021(04)Page:100-110.
ZHOU Z M,QIN M,WAN F,Han Z X,Jing J J. Recognizing Coiled Tubing Defect Characteristics Based on Weak Magnetic Detection Technology[J]. IEEE Transactions on Magnetics, 2019, 55(9).
Schmidt P W, Clark D A. The magnetic gradient tensor: Its properties and uses in source characterization[J]. The Leading Edge, 2006, 25(1): 75-78.
M.Mosharafi,S.B.Mahbaz,M.B.Dusseault,Ph Vanheeghe. Magnetic detection of corroded steel rebar: Reality and simulations [J]. NDT and E International,2020,110(C).
LI L J,Zhang X G. Discrimination method of wire rope fault signal based on Holzer sensor for multi array weak magnetic detection[J]. Cluster Computing,2019,22(2).
Tsukada Keiji,Tomioka Takuya,Wakabayashi Shunki,Sakai Kenji,Kiwa Toshihiko. Magnetic Detection of Steel Corrosion at a Buried Position Near the Ground Level Using a Magnetic Resistance Sensor[J]. IEEE Transactions on Magnetics, 2018, 54(11).
YIN G;ZHANG Y T;MI S L;HAN L Y;LIU M; Multiple Magnetic Targets Inversion Technique Based on Tilt Angle and Helbig Method[J]. Journal of Shanghai Jiaotong University. 2017(05)Page:577-584.
Kurosh Karimi,Farzad Shirzaditabar. Using the ratio of the magnetic field to the analytic signal of the magnetic gradient tensor in determining the position of simple shaped magnetic anomalies[J]. Journal of Geophysics and Engineering, 2017, 14(4).
LI J P,ZHANG Y T,FAN H B,LI Z N,YIN G,DU Y C.Focus Inversion Method Based on Normalized Source Strength[J]. Journal of Geodesy and Geodynamics.2017(10)Page:1045-1048.
LI J P ,ZHANG Y T,FAN H B,LI Z N,ZHANG G.Three-dimensional Focusing Inversion of Magnetic Target in the Presence of Significant Remanence[J]. Acta Armamentarii. 2018(11) Page:2202-2210.
LI Z L,YAO C L,ZHENG Y M,MENG X H,ZHANG Y W. 3D data-space inversion of magnetic amplitude data[J]. Chinese Journal of Geophysics. 2015(10) Page:3804-3814.
Liu S B,Sui Y Y,Leslie Keith,Foss Clive,Clark David. Determination of the Direction of Magnetization and Orientation of a Tilted Sheet From Downhole Magnetic Gradient Tensor Data[J]. IEEE Transactions on Geoscience and Remote Sensing,2020,58(3).
Liu K,Sui Y Y,Cheng H, Wang Z X,David A. Clark. Magnetic Dipole Moment Determination Using Near-Field Magnetic Gradient Tensor Data[J]. IEEE Geoscience and Remote Sensing Letters,2020,PP(99).
HUANG Y S,WANG Y G,LUO X.A fast estimation method of magnetic-source parameters based on the vertical difference of normalized source strength[J]. Geophysical and Geochemical Exploration. 2021(06) Page:1588-1596.