2e051 Ground Radar Systems Journeyman
A ground radar systems journeyman should ensure that they install and maintain air traffic control and weather equipment, ground control and warning radar to ensure aircraft can be safely guided through takeoff and landing. Take the quiz below on these systems if you are preparing to be a ground radar systems journey man in the air force. Good luck!
- 1.The airport surveillance radar (ASR) is used in which Air Traffic Contol (ATC) radar mission category?
- A.
Percision approach radar control.
- B.
Terminal control area.
- C.
Air route traffic control.
- D.
Local control.
- 2.The range resolution if a radar set is determined by what characteristic?
- A.
Pulse recurrence frequency.
- B.
Antenna beam width.
- C.
Transmitted pulse width.
- D.
Pulse recurrence time.
- 3.Azimth resolution is directly related to what radar set characteristic?
- A.
Pulse recurrence freqency.
- B.
Transmitted pulse width.
- C.
Pulse recurrence time.
- D.
Antenna beam width.
- 4.Sitting a percision approach radar (PAR) for multiple runway approaches can cause you to locate the unit outside the optimum coverage areas. If this occurs what would be the best location for the radar system?
- A.
No location is best; do not install the PAR.
- B.
At the center point between runway overruns.
- C.
A position where it gives limited coverage to all your runways.
- D.
A position where it gives the best coverage to your most important runway.
- E.
Who cares.
- 5.In the AN/GPN-22 percision approach radar (PAR) system, frequency diversity is done by transmitting two 1 usec pulses that are composed of two x-band frequencies separated by
- A.
24 Mhz
- B.
37 Mhz
- C.
74 Mhz
- D.
124 Mhz
- E.
Your mother.
- 6.Once Track has been established in the AN/GPN-22 percision approach radar (PAR), what device uses error data obtained from the recieved signal to predict where the target will be during the next track interval?
- A.
Target Data Computer (TDC)
- B.
Signal Data Computer (SDC)
- C.
Computer Data Entry Module (CDEM)
- D.
Antenna Beam Position Control Unit (ABPCU)
- E.
Computer Antenna Control Area (CACA)
- 7.How many narrow band filters does the AN/GPN-22 percision approach radar (PAR) employ to convert a shift in intermediate frequency (IF) to a range error signal?
- A.
24
- B.
37
- C.
74
- D.
137
- E.
How does it effect my life?
- 8.In the AN/GPN-22 percision approach radar (PAR), the operational program is locked to the real-time radar operations by the interrupt command signal from the
- A.
Dual channel reciever processor.
- B.
Antenna beam position unit.
- C.
Radar data transfer group.
- D.
Refresh memory.
- E.
Brandon makes me hate life, because he bums cigarettes off me all day, then embarrasses me infront of other people.
- 9.During the target track cycle, in the AN/GPN-22 percision approach radar (PAR), the computer updates the computation of azimuth, elevation, and slant range coordinates on how many targets?
- A.
Three
- B.
Four
- C.
Five
- D.
Six
- E.
Seventy
- 10.At what interval does the AN/GPN-22 percision approach radar's (PAR) target data computer (TDC) perform system fault monitoring?
- A.
Every pulse recurrence time (PRT)
- B.
Once every 2 seconds
- C.
Once per track interval
- D.
At beam interrupt signal time.
- E.
Bleh!
- 11.In the AN/GPN-22 percision approach radar (PAR), what are the three modes of operation with respect to data loop operation?
- A.
Command, open-loop, closed-loop
- B.
Diagnostic, operational, coherent
- C.
Data point, closed-loop, self-test
- D.
Command, input, and output
- E.
Bozo the clown
- 12.In the AN/GPN-22 percision approach radar (PAR), the data loop interface logic circuitry used in each of the subsystems is commonly called
- A.
One's compliment
- B.
Repeaters logic
- C.
Closed-loop
- D.
Open-loop
- E.
Pie
- 13.The AN/GPN percision approach radar's (PAR) refresh memory provides a flicker-free presentation of the target symbol on the radar display by refreshing the display at a
- A.
15-cycle rate
- B.
30-cycle rate
- C.
60-cycle rate
- D.
120-cycle rate
- E.
44.1 Hertz
- 14.The AN/GPN-22 percision approach radar (PAR) primary input voltage is 3 phase,
- A.
110 volt, aternating current (VAC)
- B.
110 volt, direct current (VDC)
- C.
208 VAC
- D.
208 VDC
- E.
Over 9000!
- 15.AN/GPN percision approach radar (PAR) emergency power is supplied by a
- A.
12-volt, alternating current (VAC) battery
- B.
12-volt, direct currnet (VDC) battery
- C.
110-VDC battery
- D.
208-VDC battery
- 16.THe AN/GPN-22 percision approach radar (PAR) multivoltage power supply (1A10) provides how many similar voltages from internal direct current (DC) power supplies?
- A.
Five
- B.
Six
- C.
Seven
- D.
Ten
- E.
One million dollars
- 17.What capability makes the traveling wave tube (TWT) much more versitile than the magnetron?
- A.
It is a remarkably stable oscillator.
- B.
It is a wide band amplifier and not an oscillator.
- C.
It is far more efficient at using repeller plate potential.
- D.
Its narrow bandwidth provides unsurpassed frequency stability.
- E.
Its magic.
- 18.What is the purpose of the attenuators near the middle of the traveling wave tube's (TWT) helix?
- A.
Divide the power by half.
- B.
Double the output frequency.
- C.
Prevent frequency doubling.
- D.
Prevent the radio frequency (RF) waves from being reflected back.
- E.
Prevent unwanted pregnancy.
- 19.What is the original source of the continuous wave (CW) radio frequency (RF) drive in the AN/GPN-22 percision approach radar (PAR)?
- A.
37-megahertz (MHz) crystal oscillator.
- B.
74-MHz crystal oscillator.
- C.
Stable local oscillator
- D.
Local oscillator.
- E.
Local H
- 20.In the AN/GPN-22 percision approach radar (PAR), the stabilized master oscillator (STAMO) multiplies the continuous wave (CW) transmitter drive signal to the
- A.
L-band
- B.
S-band
- C.
W-band
- D.
X-band
- E.
ROC-band
- 21.The purpose of the traveling wave tube (TWT) radar modulator in the AN/GPN-22 percision approach radar (PAR) transmitter is to
- A.
Provide voltage amplification and trigger shaping for the TWT.
- B.
Provide excitation voltage for the cathode of the TWT.
- C.
Modulate the incoming video for conversion to IF.
- D.
Provide pulse shaping for stable master oscillator.
- 22.In the AN/GPN-22 percision approach radar (PAR) transmitter, which fault would cycle the transmitter to the STANDBY mode of operation?
- A.
Traveling wave tube (TWT) arc.
- B.
High Voltage (HV) deck.
- C.
Standby converter.
- D.
Airflow.
- E.
Power cord unplugged.
- 23.The principle purpose of the antenna beam position unit (ABPCU) and array phase control unit (APCU) in the AN/GPN-22 percision approach radar (PAR) is to
- A.
Generate timing signals for the radar system.
- B.
Provide predicted target locations to the target data computer.
- C.
Generate ultra high frequency (UHF) transmitter drive frequencies.
- D.
Generate phase delay commands to phase shifter elements of the antenna.
- E.
Do something i care very little about.
- 24.In the scan mode the AN/GPN-22 percision approach radar (PAR) can direct the radio frequency (RF) beam to how many seperate beam positions?
- A.
443
- B.
439
- C.
423
- D.
421
- E.
Over 9000!
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