Vector Field And Magnetic Field Tomography Method To Establish Its Computer Simulation,

As research and application of the geomagnetism go on, the existing measuring methods of geomagnetic field have shown some limitations. In order to overcome the defects of existing geomagnetism measuring methods, our groups put forward a new measuring method of the geomagnetic field, which is magnetic rotation imaging method to measure the geomagnetic field. According to its principle, this measuring method has some characteristics such as visualization, three-dimension ability, high speed. Image reconstruction had been touched upon in the measuring method. Our groups take advantage of CT (Computed Tomography) image reconstruction, which is the most widely used method, to resolve that. CT image reconstruction is used in medicine, industry, space technology, aviation, physical geography, and so on.A part of image reconstruction is expounded in this paper, which is about magnetic rotation imaging method to measure the geomagnetic field, and the purpose is to build a new CT reconstruction algorithm, which is simulated by the computer to validated the method is correct, fit for the vector field. The main research is follows:(1) Study the measuring methods of geomagnetic field and analysis the limitations of the existing methods. Put forward a new measurement method of geomagnetic field.(2) Reconstruction the geomagnetic field used the CT image reconstruction. This paper introduces the principles of CT image reconstruction and Central Slice Theorem, is focused on the algebra iterative algorithm. These have many meanings to the method of image reconstruction.(3) The algebra iterative algorithm is the model of the algorithm we used in this paper. In this paper, analyses the principle of algebra iterative algorithm. Then build a new algorithm which was fit for the vector type and magnetic field. Further, made the new algorithm is applicable the three-dimensional image reconstruction of the geomagnetic field.(4) The new reconstructed algorithm was been simulated by the computer, and verify the correctness.