Patent ID: 11874371
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The sparse optimization method based on cross-shaped three-dimensional imaging sonar array according to claim 2, wherein, in last step, the formula for adding disturbance is:, (
    
      
        x
        m
      
      ,
      
        y
        n
      
    
    )
  
  =
  
    {
    
      
        
          
            
              
                p
                xy
              
              +
              
                (
                
                  
                    unifrnd
                    ⁡
                    
                      (
                      
                        
                          
                            -
                            0.1
                          
                          ×
                          
                            λ
                            min
                          
                        
                        ,
                        
                          0.1
                          ×
                          
                            λ
                            min
                          
                        
                      
                      )
                    
                  
                  ,
                  0
                
                )
              
            
            ,
          
        
        
          
            if
            ⁢
            
              
            
            ⁢
            receiving
            ⁢
            
              
            
            ⁢
            array
          
        
      
      
        
          
            
              
                p
                xy
              
              +
              
                (
                
                  unifrnd
                  ⁡
                  
                    (
                    
                      
                        
                          -
                          0.1
                        
                        ×
                        
                          λ
                          min
                        
                      
                      ,
                      
                        0.1
                        ×
                        
                          λ
                          min
                        
                      
                    
                    )
                  
                
                )
              
            
            ,
          
        
        
          
            if
            ⁢
            
              
            
            ⁢
            transmitting
            ⁢
            
              
            
            ⁢
            array
          
        
      
    
  

wherein, unifrnd(−0.1×λmin, 0.1×λmin) is a function of the software MATLAB, which means that a random number is generated in the interval (−0.1×λmin, 0.1×λmin).