(statute miles) 2 



MINIMUM 



AVERAGE 



ERROR 



OF FIX 



0.5 



1000 

 500 



200 



(feet) 100 



50 

 25 



FREQUENCY 

 30 10 3 



megacycles; 

 1 0.5 0.1 



0.03 0.01 











/ 



/ 



■ 



/ 













y«^ 







•^LORAN 



C 









x'^ 



'^^ 















^ 







/ 



















y 





/ 



'4^ 











_ ,.^_ 



/ 



/ 





X"^^ 



-^<^\° 









/ 



SHORAN 













DECCA 





/ 











/ 





30 100 300 1000 3000 10,000 30,000 



WAVE LENGTH (meters) 



FIGURE III-IO THE MINIMUM ERRORS OF FIX 



ATTAINABLE BY THREE STANDARD 

 MEASURING TECHNIQUES 



29 



