Results
Q1. The maximum range obtainable from an ATC Long Range Surveillance Radar is approximately:
300 NM
Q2. The maximum pulse repetition frequency (PRF) that can be used by a primary radar facility in order to detect targets unambiguously at a range of 50 NM is: (pps = pulses per second)
1620 pps
Q3. Assuming sufficient transmission power, the maximum range of a ground radar with a pulse repetition frequency of 450 pulses per second is: (Given: velocity of light is 300 000 km/second)
333 km
Q4. A long-range surveillance radar will typically use a frequency of
1000 MHz
Q5. A ground radar transmitting at a PRF of 1200 pulses/second will have a maximum unambiguous range of approximately:
67 NM
Q6. A simple schematic diagram of a typical primary radar set, will show that
The Display unit is fed information from the receiver and the timebase generator
Q7. A radar used by ATC has the following characteristics: Long wavelength, aerial rotation speed 5 RPM. Most likely this is
An en route surveillance radar
Q8. A Surveillance Radar installation will often consist of
A Primary radar and a Secondary Surveillance Radar (SSR)
Q9. Two types of radar approaches may be available
Surveillance approach and Precision approach
Q10. A radar facility transmitting at a Pulse Recurrence Frequency (PRF) of 1200 pulses/second will have a maximum unambiguous range of approximately:
69 NM
Q11. Ignoring pulse length and fly-back, a radar facility designed to have a maximum unambiguous range of 50 km will have a PRF (pulses per second) of:
3000
Q12. Complete the following statement. Aircraft Surface movement Radar operates on frequencies in the (i) ………. band employing an antenna that rotates at approximately (ii) ………. revolutions per minute; it is (iii) ………. possible to determine the type of aircraft from the return on the radar screen.
(i) SHF (ii) 60 (iii) sometimes
Q13. Which combination of characteristics gives best screen picture in a primary search radar?
short pulse length and narrow beam
