Patent ID: 11953635
Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The seismometer with high sensitivity, broadband and all-dip according to claim 6, wherein an expression of the frequency calibration equation is as follows:, {
  
   
    
     
      
       g
       p
      
      =
      
       
        
         -
         
          γδ
          ⁡
          (
          t
          )
         
        
        ⁢
        
         
          F
          ′
         
         (
         t
         )
        
       
       
        1
        +
        
         a
         1
        
       
      
     
    
   
   
    
     
      
       g
       i
      
      =
      
       
        
         -
         γ
        
        ⁢
        
         δ
         ⁡
         (
         t
         )
        
        ⁢
        
         
          ∫
          0
          t
         
         
          
           
            F
            ′
           
           (
           τ
           )
          
          ⁢
          d
          ⁢
          τ
         
        
       
       
        1
        +
        
         a
         2
        
       
      
     
    
   
   
    
     
      
       g
       d
      
      =
      
       
        
         -
         γ
        
        ⁢
        
         δ
         ⁡
         (
         t
         )
        
        ⁢
        
         
          dF
          ′
         
         dt
        
       
       
        1
        +
        
         a
         3
        
       
      
     
    
   
   
    
     
      
       δ
       ⁢
       
        (
        t
        )
       
      
      =
      
       
        -
        
         (
         
          s
          +
          
           a
           i
          
         
         )
        
       
       ⁢
       
        
         F
         ′
        
        (
        t
        )
       
      
     
    
   
  
 

wherein, gp, gi and gd respectively represent the feedback parameters, s, ai, γ, a1, a2, a3 respectively represent self-adaption gain coefficients, δ(t) represents gain time function, F′(t) and F′ both represent frequency difference response, t represents time, F′(τ) represents frequency domain difference response, and d represents integration.