Title : 
Ultrasonic Doppler for Distance Measurement
         
        
            Author : 
Wachspress, Melvin
         
        
        
        
        
            fDate : 
3/1/1961 12:00:00 AM
         
        
        
        
            Keywords : 
Acoustic transducers; Cities and towns; Distance measurement; Equations; Frequency; Geometry; Modems; Optical reflection; Roads; Ultrasonic transducers;
         
        
        
            Journal_Title : 
Ultrasonic Engineering, IRE Transactions on
         
        
        
        
        
            DOI : 
10.1109/T-PGUE.1961.29273