INDEX D Doppler  principles refraction  measurement,  1-8 velocity   computation,   1-8 G O NNSS computer  center,  1-7 injection  station,  1-7 naval  observatory,  1-7 satellites, 1-6 tracking  stations,  1-7 GPS  navigation  sets AN/PSN-8   manpack,   1-18 AN/WRN-6,  1-17 L LORAN line-of-position,    1-2 N Navigation  aids fathometers,   1-19 radar,  1-19 Navigation  fundamentals dead  reckoning,  1-1 electronic  navigation,  1-2 piloting,  1-2 tactical,  1-1 Navigation  sets AN/SRN-19,   1-11 AN/WRN-5,   1-9 NAVSTAR   Global   Positioning   System clock  error,  1-16 ground  control,  1-14 ionospheric  delay,  1-16 multipath  reception,  1-16 satellite ranging, 1-15 satellite signal structure, 1-15 satellites,  1-14 signal  acquisition,  1-15 tropospheric  delay,  1-16 Omega hyperbolic  navigation,  1-3 s SINS accelerometers,   1-4 advantages,  1-3 AN/WSN-5,   1-5 gyros,  1-4 servo  systems,  1-4 T TACAN aircraft indications, 2-1 aux reference burst, 2-4 bearing  information  (15  Hz),  2-3 bearing  information  (135  Hz),  2-4 cardioid,  2-3 constant  transponder  duty-cycle,  2-1 identification  code,  2-2 north  reference  burst,  2-4 principles, 2-1 pulse pairs, 2-1 signal priorities, 2-4 squitter, 2-2 TACAN   equipment antenna   group   OE-273(V)/URN,   2-7 AN/URN-20,   2-9 AN/URN-25,   2-5 INDEX-1