Seawater quality three-dimensional space-time sequence multi-parameter accurate prediction method and system
A prediction method and multi-parameter technology, applied in prediction, neural learning method, data processing application, etc., can solve the problem of not considering correlation, and achieve the effect of improving prediction accuracy, reducing non-stationarity, and improving extraction rate
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Embodiment 1
[0046] like figure 1 As shown, the present invention provides a multi-parameter accurate prediction method for a three-dimensional space-time sequence of seawater water quality, including:
[0047] 1. The key parameters of seawater water quality are optimized by PCA algorithm and the correlation coefficient between them is calculated. Each key parameter data X k (k=1,2,...,t) is a four-dimensional vector, X=[x 1 ,x 2 ,x 3 ,x 4 ] T , x 1 is the sampling time, x 2 , x 3 , x 4is the three-dimensional coordinates of the sampling point in the seawater area. The key parameters of seawater quality are evenly distributed on the vertical coordinates, and the time t is set to generate the 50*50*50(t,x,y,z) coordinate position of each key parameter at time t.
[0048] 2. Use EEMD to perform noise reduction processing on the selected key water quality parameter data. EEMD decomposes the original sequence of all key parameters, calculates the correlation features between them, a...
Embodiment 2
[0055] The present invention also provides a multi-parameter accurate prediction system for seawater water quality three-dimensional space-time sequence, including:
[0056] The parameter acquisition module is used to acquire the key parameters of seawater quality and reduce the interference of other physical or water quality factors that are not related to the key parameters of water quality.
[0057] The parameter acquisition module includes a PCA algorithm unit and an improved EMD algorithm unit. The PCA algorithm unit is used to optimize the key parameters of seawater quality and reduce the interference of other physical or water quality factors that have little correlation with the key parameters of water quality; the improved EMD algorithm unit is used to reduce the non-stationarity of the key parameters of seawater quality.
[0058] A parameter processing module, connected with the parameter acquisition module, is used for processing the key parameters to obtain target ...
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