A method of ionosphere forecasting based on vmd and elman neural network
An ionospheric forecasting and neural network technology, applied in the field of ionospheric forecasting based on VMD and Elman neural network, can solve the problems of model dead cycle, reduce the data processing capacity of the network structure, avoid the optimal value, etc., and achieve the improvement of preprocessing quality effect
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[0064] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0065] An ionospheric forecasting method based on VMD and Elman neural network, using the combination of variational mode decomposition method and Elman neural network to carry out ionospheric TEC forecasting modeling, specifically includes the following steps:
[0066] Step 1, Raw TEC sequence for the ionosphere Carry out Fourier spectrum analysis, by analyzing its amplitude-frequency characteristics, it can be judged that the TEC original sequence contains several frequency components, so as to determine the number of decomposition modes of the subsequent VMD algorithm ;
[0067] Step 2, usin...
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