Ex parte CHANG et al. - Page 4




          Appeal No. 2000-2085                                                        
          Application No. 08/803,937                                                  


                 communication transceiver and the object                             
                 corresponding to the second satellite                                
                 communication transceiver performing one of                          
                 receiving the fourth ranging signal from the                         
                 object in response to the first satellite                            
                 communication transceiver transmitting the third                     
                 ranging signal to the object and transmitting                        
                 the third ranging signal to the object wherein                       
                 the object transmits the fourth ranging signal                       
                 in response thereto to the first satellite                           
                 communication transceiver; and                                       



                      a ground station for determining a first                        
                 path length corresponding to a first time length                     
                 of the bidirectional communication path,                             
                 determining a second path length corresponding                       
                 to a second time length of the first and second                      
                 unidirectional communication paths, and                              
                 determining the position of the object based on                      
                 the first and second known locations and the                         
                 first and second path lengths.                                       
                                    THE PRIOR ART                                     
                 The reference relied upon by the examiner as                         
            evidence                                                                  
            of anticipation and obviousness is:                                       
                 Ames et al. (Ames)        5,126,748           Jun. 30,               
            1992                                                                      
                                   THE REJECTIONS                                     
                 Claims 1, 8 and 10 stand rejected under 35 U.S.C.                    
             102(b) as being anticipated by, and in the alternative                  

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