Patent ID: 11867795
Assignee: ELTA SYSTEMS LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The fusion system of claim 1, wherein the fused plots generator includes:
a prediction unit configured to generate predicted plots based on the converted plots and the preliminary GMTI tracks by assigning a common time tag to all the converted plots from said plurality of the GMTI radars, wherein said predicted plots are in the form of predicted plot vectors indicative of locations of said plurality of targets, said predicted plot vectors are in the form of S=(xp(tp), yp(tp)), where tp is the end scan time of the radar which is the last to stop operating, and where xp(tp) and yp(tp) are predicted location projections of the target on the x and y axes, correspondingly, at time tp; and wherein said predicted plot vectors are associated with a corresponding covariance error matrix, M
    i
   
   =
   
    (
    
     
      
       
        σ
        
         x
         p
        
        2
       
      
      
       
        
         σ
         
          x
          p
         
        
        ⁢
        
         
          σ
          y
         
         p
        
       
      
     
     
      
       
        
         σ
         
          x
          p
         
        
        ⁢
        
         σ
         
          y
          p
         
        
       
      
      
       
        σ
        
         y
         p
        
        2
       
      
     
    
    )
   
  
  ,, where i=1, 2, . . . n, and n is the number of the GMTI radars in said plurality of radars; and
an assignment unit configured to assign the predicted plots from the plurality of GMTI radars to corresponding targets from said plurality of targets;
a fusion unit configured to construct fused plots for said plurality of the targets from corresponding predicted plots; said fused plots are represented by corresponding fused plot vectors f=(xf, yf), where xf and yf are the fused location projections of the target on the x and y axes, correspondingly.