1C8X3 CDC VOL. 3 (FIXED RADAR SYSTEMS)
PRACTICE EXAM QUESTIONS WITH VERIFIED
ANSWERS
Where are Primary Surveillance Radar (PSR) failures reported?
Control and Monitoring System (CMS).
What is the frequency range of the Primary Surveillance Radar (PSR)?
2700-2900 MHz.
In the Monopulse Secondary Surveillance Radar (MSSR), when the operational on-line
channel fails, what happens to the system?
Standby channel comes on-line and the faulted channel goes off-line not to exceed 4 seconds.
What does an aircraft's speed and angle in reference to a radar site determine?
Radial velocity.
What term describes the condition of an aircraft becoming invisible to radar when it
travels at
a certain speed and creates a Doppler shift, the same as the pulse repetition frequency
(PRF) of the
radar?
Blind speed.
What type of system can look at zero Doppler returns, compare them to a clutter map, and
then determine whether the video return is ground clutter or a target?
Moving target detection (MTD).
How many Doppler filters are in the Primary Surveillance Radar (PSR)?
5
What eliminates second-time-around targets in the Primary Surveillance Radar (PSR)?
Staggering the coherent processing interval (CPI) and performing an M of N function
Which ASR-11 beam is the normal radiation beam and is always used to transmit and
receive?
Low beam
, What provides Ethernet connection from the Monopulse Secondary Surveillance Radar
(MSSR) into the site control and data interfaces (SCDI) to provide an interface to the radar
control panel (RCP) at the radar site?
Two MPS-800 servers.
In the Primary Surveillance Radar (PSR), if one transmitter amplifier module fails or is in
standby, the remaining seven amplifier modules will provide a minimum of 14kW peak
power.
This is enough power to cover how many nautical miles (nm)?
60
Originally, secondary radar technology was created while developing the radar to
identify a radar aircraft target as friend or foe.
What does a secondary radar system provide that a primary does not?
Identity and altitude.
What does the use of two frequencies in secondary radar transactions eliminate?
Clutter caused by direct reflections.
What process is not necessary with digitized beacon and primary radar systems like the
ASR-11?
Synchronization
The biggest upgrade Monopulse Secondary Surveillance Radars (MSSR) have over older
beacon radars is they
can determine azimuth from one return of a transponder.
The Sum port is the main beam of the antenna; the center of this main radar beam is
known
as the
boresight
The Monopulse Secondary Surveillance Radar (MSSR) transmitter produces coded pulses
up to what power level?
2,000 watts peak
Which Monopulse Secondary Surveillance Radar (MSSR) subassembly develops the radio
frequency (RF) sample video for monitoring?
Low duty power amplifier
PRACTICE EXAM QUESTIONS WITH VERIFIED
ANSWERS
Where are Primary Surveillance Radar (PSR) failures reported?
Control and Monitoring System (CMS).
What is the frequency range of the Primary Surveillance Radar (PSR)?
2700-2900 MHz.
In the Monopulse Secondary Surveillance Radar (MSSR), when the operational on-line
channel fails, what happens to the system?
Standby channel comes on-line and the faulted channel goes off-line not to exceed 4 seconds.
What does an aircraft's speed and angle in reference to a radar site determine?
Radial velocity.
What term describes the condition of an aircraft becoming invisible to radar when it
travels at
a certain speed and creates a Doppler shift, the same as the pulse repetition frequency
(PRF) of the
radar?
Blind speed.
What type of system can look at zero Doppler returns, compare them to a clutter map, and
then determine whether the video return is ground clutter or a target?
Moving target detection (MTD).
How many Doppler filters are in the Primary Surveillance Radar (PSR)?
5
What eliminates second-time-around targets in the Primary Surveillance Radar (PSR)?
Staggering the coherent processing interval (CPI) and performing an M of N function
Which ASR-11 beam is the normal radiation beam and is always used to transmit and
receive?
Low beam
, What provides Ethernet connection from the Monopulse Secondary Surveillance Radar
(MSSR) into the site control and data interfaces (SCDI) to provide an interface to the radar
control panel (RCP) at the radar site?
Two MPS-800 servers.
In the Primary Surveillance Radar (PSR), if one transmitter amplifier module fails or is in
standby, the remaining seven amplifier modules will provide a minimum of 14kW peak
power.
This is enough power to cover how many nautical miles (nm)?
60
Originally, secondary radar technology was created while developing the radar to
identify a radar aircraft target as friend or foe.
What does a secondary radar system provide that a primary does not?
Identity and altitude.
What does the use of two frequencies in secondary radar transactions eliminate?
Clutter caused by direct reflections.
What process is not necessary with digitized beacon and primary radar systems like the
ASR-11?
Synchronization
The biggest upgrade Monopulse Secondary Surveillance Radars (MSSR) have over older
beacon radars is they
can determine azimuth from one return of a transponder.
The Sum port is the main beam of the antenna; the center of this main radar beam is
known
as the
boresight
The Monopulse Secondary Surveillance Radar (MSSR) transmitter produces coded pulses
up to what power level?
2,000 watts peak
Which Monopulse Secondary Surveillance Radar (MSSR) subassembly develops the radio
frequency (RF) sample video for monitoring?
Low duty power amplifier
