Guide heliocentric orbit simulation Research and Improvement

In this paper, based on the Dr XiaoXiaoTao developed a proven applicable to heart long time scales of guide rail simulator, using the discrete Fourier transform method, the performance is superior to the calculating program. In order to meet the requirements of symmetry and seek higher derivative, based on the original program, based on the physical properties of magnetic field information discretization of discrete Fourier transform, using trigonometric polynomial approximation of the passage, all of the dual function, can theoretically beg to any derivative. New calculation method, and the traditional cubic spline interpolation were compared with B spline interpolation, is exactly the same orbit simulation results are obtained. And you can clearly see each physical quantity on time at different levels of change rule. And ensure the upward Angle of symmetry, and filtering effect, calculation of stability is better. This article concluded that the Fourier transform is used to produce the physical quantities such as magnetic field method is completely feasible. Sampling at the same time, in view of the effect of fitting error source is analyzed, finally some of the problems of fast Fourier transform are discussed, and gives the FFT is applied to the calculation of physical quantities in the tokamak of attention should be paid to the problem.