Patent ID: 11953917
Assignee: SHENZHEN SIYUFEI TECHNOLOGY CO., LTD.
Field: Control (Instruments)
Classification: CPC G  B  Y | IPC B  G

Claim 9:
10. The launching method according to claim 1, wherein obtaining the updated system data set by using the Fourier transform algorithm on all of the angle values in the system data set comprises:
S1, performing discrete Fourier transform on the angle values in the system data set according to following formulas to obtain discrete data in frequency domain:, X
   ⁡
   (
   k
   )
  
  =
  
   
    D
    ⁢
    F
    ⁢
    
     T
     [
     
      x
      ⁡
      (
      n
      )
     
     ]
    
   
   =
   
    
     
      ∑
      
       n
       =
       0
      
      
       N
       -
       1
      
     
     
      
       x
       ⁡
       (
       n
       )
      
      ⁢
      
       e
       
        
         -
         j
        
        ⁢
        
         
          2
          ⁢
          π
         
         N
        
        ⁢
        n
        ⁢
        k
       
      
     
    
    =
    
     
      ∑
      
       n
       =
       0
      
      
       N
       -
       1
      
     
     
      
       x
       ⁡
       (
       n
       )
      
      ⁢
      
       W
       N
       
        n
        ⁢
        k
       
      
     
    
   
  
 

 
  0
  ≤
  k
  ≤
  
   N
   -
   1
  
 

wherein X(k) represents discrete data in frequency domain, DFT represents discrete Fourier transform, x(n) represents data corresponding to N position in the system data set, N represents data quantity of the system data set, e represents the base of natural logarithm, and WN represents the phase representation corresponding to the periodic function of w period 2π;
S2, processing the discrete data in frequency domain obtained in step S1 according to the following ternary operation formula:

X1(k)=(X(k)>fbase)?X(k−1):X(k)

X(k) represents the discrete data in the frequency domain obtained in step S1, (base represents the preset frequency, and X1(k) represents the discrete data in the frequency domain after processing X(k);
S3, performing inverse discrete Fourier transform on the discrete data in frequency domain obtained in step S2 according to the following formula, so as to obtain a dithered system data set:, X
    1
   
   (
   n
   )
  
  =
  
   
    IDFT
    [
    
     
      x
      1
     
     (
     k
     )
    
    ]
   
   =
   
    
     
      1
      N
     
     ⁢
     
      
       ∑
       
        k
        =
        0
       
       
        N
        -
        1
       
      
      
       
        
         X
         1
        
        (
        k
        )
       
       ⁢
       
        e
        
         j
         ⁢
         
          
           2
           ⁢
           π
          
          N
         
         ⁢
         n
         ⁢
         k
        
       
      
     
    
    =
    
     
      1
      N
     
     ⁢
     
      
       ∑
       
        k
        =
        0
       
       
        N
        -
        1
       
      
      
       
        
         X
         1
        
        (
        k
        )
       
       ⁢
       
        W
        N
        
         n
         ⁢
         k
        
       
      
     
    
   
  
 

 
  0
  ≤
  n
  ≤
  
   N
   -
   1
  
 

x1(n) represents the data corresponding to the n position in the dithered system data set, IDFT represents the inverse discrete Fourier transform, x1(k) represents the discrete data in the frequency domain obtained in step S2, N represents the data quantity of the system data set, E represents the base of natural logarithm, and WN represents the phase representation corresponding to the periodic function with a period of 2π w;
S4, covering the initial discrete data x(n) in the frequency domain with the discrete data x1(n) obtained in step S3.