OGRAD 09.01 - Doppler Navigation System

Results

Q1. The major source of cross-track error in a doppler navigation system is:

compass error

altitude error

latitude error

manoeuvring error

compass error

Q2. An apparent increase in the transmitted frequency which is proportional to the transmitter velocity will occur when:

the transmitter moves away from the receiver

the transmitter moves towards the receiver

the receiver moves towards the transmitter

both transmitter and receiver move towards each other

the transmitter moves towards the receiver

Q3. The Doppler Navigation System is based on:

doppler VOR (DVOR) Navigation System

radio waves refraction in the ionosphere

radar principles using frequency shift

phase comparison from ground station transmissions

radar principles using frequency shift

Q4. Due to ‘Doppler’ effect an apparent decrease in the transmitted frequency, which is proportional to the transmitter’s velocity, will occur when:

the transmitter and receiver move towards each other

the transmitter moves away from the receiver

the transmitter moves toward the receiver

both transmitter and receiver move away from each other

the transmitter moves away from the receiver

Q5. A Doppler shift will occur

If a transmitter is moving during transmission to a fixed position receiver

When the distance between a transmitter and a receiver is changing during a transmission

If a receiver is moving during reception of transmissions from a fixed position transmitter

All 3 answers are correct

Q6. In the normal applications using Doppler shift registered in aircraft equipment

The Doppler shift will only be detectable when a ground station is within range

The Doppler shift will be doubled, because it is based on measuring the frequency of a reflected signal from the ground

The Doppler shift, indicating ground speed, will always indicate a speed higher than the actual ground speed of the aircraft, due to depression of the beams

The Doppler shift frequency will normally be displayed

The Doppler shift will be doubled, because it is based on measuring the frequency of a reflected signal from the ground

Q7. In using an airborne Doppler navigation system, the Doppler shift is proportional to

Aircraft speed and aerial depression

Aircraft speed and absolute altitude

Aircraft speed and transmitter frequency

Aircraft speed, transmitter frequency and aircraft absolute altitude

Aircraft speed and transmitter frequency

Q8. In using an airborne Doppler navigation system, the expected accuracy

Will be higher for cross-track movements than for movement along track

Will be improved with careful adjustment of the antenna tilt

Is 0.1% in ground speed

Will be high when flying over a calm sea

Is 0.1% in ground speed

Submit The Test

Results

Q1. The major source of cross-track error in a doppler navigation system is:

Q2. An apparent increase in the transmitted frequency which is proportional to the transmitter velocity will occur when:

Q3. The Doppler Navigation System is based on:

Q4. Due to ‘Doppler’ effect an apparent decrease in the transmitted frequency, which is proportional to the transmitter’s velocity, will occur when:

Q5. A Doppler shift will occur

Q6. In the normal applications using Doppler shift registered in aircraft equipment

Q7. In using an airborne Doppler navigation system, the Doppler shift is proportional to

Q8. In using an airborne Doppler navigation system, the expected accuracy

Thank You