Overview Of Navigation Systems

What is the primary function of the DME system in aircraft navigation?

• To measure the altitude of the aircraft

• To measure the slant range distance between the aircraft and a ground station

• To monitor the speed of the aircraft

• To provide heading information

Which of the following is a characteristic of an ATC system?

• It calculates the slant range using pulse signals

• It controls the aircraft’s altitude and heading

• It manages the interrogation and reply signals between the ground station and aircraft

• It measures the airspeed of the aircraft

How does the DME system calculate the distance between the aircraft and the ground station?

• By measuring the speed of the aircraft relative to the station

• By calculating the time between sending and receiving a signal, accounting for a delay

• By using the altitude of the aircraft and converting it into a distance

• By measuring the difference in pressure at different altitudes

What is the typical delay used in the DME system to account for the reply signal from the ground station?

• 25 microseconds

• 20.3 microseconds

• 100 microseconds

• 50 microseconds

In the ATC-DME system, what information does the aircraft provide to the ATC ground station using transponder codes?

• Its altitude and airspeed

• The slant range distance to the next waypoint

• A four-digit code representing the aircraft’s identification or squawk code

• Its current heading and bearing