Patent ID: 11962395
Assignee: CHINA STARWIN SCIENCE & TECHNOLOGY CO., LTD
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The whole-airspace satellite search method based on the phased array antenna according to claim 1, wherein step S54 further comprises: calculating a width θBw of a scanning angle at different off-axis angles during the whole-airspace scanning:, φ
      2
     
     =
     
      φ
      1
     
    
   
  
  
   
    
     
      θ
      2
     
     =
     
      θ
      1
     
    
   
  
  
   
    
     
      ρ
      2
     
     =
     
      arctan
      ⁢
      
       (
       
        
         sin
         ⁢
         
          ρ
          n
         
        
        
         cos
         ⁢
         
          
           θ
           2
          
          ·
          cos
         
         ⁢
         
          ρ
          n
         
        
       
       )
      
     
    
   
  
  
   
    
     
      θ
      
       B
       ⁢
       w
      
     
     =
     
      
       k
       ⁢
       λ
      
      
       
        Nd
        ·
        cos
       
       ⁢
       ψ
      
     
    
   
  
 

wherein k denotes a beam width factor; λ denotes a wavelength; N denotes a number of array elements in the phased array antenna; d denotes a center distance between two array elements; and ψ denotes an off-axis angle of the phased array antenna; and
calculating a width r1 of the scanning angle at different yaw angles:
r1=a·b√{square root over (a2 sin2γ+b2 cos2γ)}y denote lengths of two axes of an ellipse formed by fitting the multiple beam widths; and γ denotes a yaw angle of the phased array antenna.