Magnetic target positioning method based on magnetic gradient tensor invariant
The invention belongs to the technical field of magnetic detection, and relates to a novel magnetic target positioning algorithm. The algorithm can can solve a magnetic target of a unique position ina geomagnetic environment by deducing a perpendicular relationship obtained by using a magnetic gradi...
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| creator | LU XIAOBIN SUN HEXUAN DUAN XIAOQIAN WU YAOYAN PEI DONGXING YUAN PENG DI HUIQIANG |
| description | The invention belongs to the technical field of magnetic detection, and relates to a novel magnetic target positioning algorithm. The algorithm can can solve a magnetic target of a unique position ina geomagnetic environment by deducing a perpendicular relationship obtained by using a magnetic gradient tensor invariant, and has the characteristic of being not affected by posture change. Firstly,the gradient tensors of three known positions are solved in a magnetic target magnetic field. Then, feature vectors corresponding to feature values with the minimal gradient tensor matrix absolute values of the three points are separately solved. At last, equations are separately built at the three measurement points by using the perpendicular relationship between the position vectors between themeasurement points and the magnetic target and feature vector vertical relations corresponding to the feature values with the minimal absolute values. By using vector operation, all the position vectors of the three points and |
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The algorithm can can solve a magnetic target of a unique position ina geomagnetic environment by deducing a perpendicular relationship obtained by using a magnetic gradient tensor invariant, and has the characteristic of being not affected by posture change. Firstly,the gradient tensors of three known positions are solved in a magnetic target magnetic field. Then, feature vectors corresponding to feature values with the minimal gradient tensor matrix absolute values of the three points are separately solved. At last, equations are separately built at the three measurement points by using the perpendicular relationship between the position vectors between themeasurement points and the magnetic target and feature vector vertical relations corresponding to the feature values with the minimal absolute values. By using vector operation, all the position vectors of the three points and</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING |
| title | Magnetic target positioning method based on magnetic gradient tensor invariant |
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