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CPL Test Series
Question Bank
Questions for GROUND RADAR
Answer the following questions
Test Mode
Training Mode
1. The SHF band has been selected for Airfield Surface Movement Indicator (ASMI) radars in preference to the EHF band because
target discrimination using the SHF band is better.
the attenuation caused by precipitation is greater in the EHF band and reduces the radar’s effective range and usefulness.
the EHF band is not suitable for the provision of the very narrow beams needed for an ASMI radar.
the EHF band causes unacceptable radiation hazards to personnel.
2. A ground based radar with a scanner rotation of 60rpm, a beam width in the order of .5° and a PRF of 10000pps would be
a Precision Approach Radar.
an Airfield Surface Movement Indicator with a theoretical range of 16nm.
an Airfield Surface Movement Indicator with a theoretical range of 8nm.
a high resolution Surveillance Approach Radar.
3. When carrying out a precision radar approach, talkdown normally ceases at _______ nm from touchdown
3 nm
0.5 nm
5 nm
2 nm
4. When flying a Precision Approach Radar in the UK, vertical displacement is based upon
QFF
QFE
Airfield QNH
Regional QNH
5. The frequency band and rate of scan of Airfield Surface Movement radars are
SHF; 60RPM
EHF; 100RPM
SHF; 200RPM
EHF; 10RPM
6. A primary radar has a pulse repetition frequency of 275 pps. The time interval between the leading edges of successive pulses is
3.64 milliseconds.
36.4 microseconds.
36.4 milliseconds.
3.64 microseconds.
7. A primary radar system has a pulse repetition frequency of 450 pps. Ignoring pulse width and flyback at the CRT, the maximum range of the radar would be
360 nm
333 nm
180 nm
666 nm
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