A: only significant if the satellites are located at a small elevation angle above the horizon
B: minimised by computing the average of all signals
C: minimised by the receiver using a model of the atmosphere and comparing signals transmitted by the satellites
A: mach number of the aircraft.
B: time passed at this altitude.
C: aircraft attitude.
D: static temperature.
A: + or – 3 NM
B: + or – 1.5 NM
C: + or – 0.25 NM
D: + or – 1.25 NM
A: sky wave interference from distant transmitters on the same frequency
B: noise from precipitation static exceeding the signal strength of the transmitter
C: sky wave interference from the same transmitter
D: interference from other transmitters
A: a reading error.
B: due to temperature effect.
C: due to pressure effect.
D: due to the effect of aircraft accelerations.
A: + or – 0.5 NM or 3% of the distance measured whichever is the greater
B: + or – 0.25 NM plus 1.25% of the distance measured
C: + or – 1.25 NM plus 0.25% of the distance measured
D: + or – 0.25 NM plus 3% of the distance measured up to a maximum of 5 NM