viserfly

Questions for DOPPLER

Answer the following questions

1. When an aircraft is flying directly away from a transmitter, transmitting on a frequency of 15 GHz, a frequency shift of 6.0 kHz is measured. The speed of the aircraft is
2. An aeroplane is flying at 486 kt directly towards a beacon transmitting on a frequency of 12 GHz. The change in frequency observed will be
3. The change in frequency measured in an aircraft from a radio transmission reflected from the ground is used to determine
4. Doppler operates on the principle that ...... between a transmitter and receiver will cause the received frequency to ...... if the transmitter and receiver are moving .....
5. Due to ‘Doppler' effect an apparent decrease in the transmitted frequency, which is proportional to the transmitter's velocity, will occur when