ATSEP BASIC question with answers
What type of surveillance is regarded Non-cooperative, independent surveillance? -
-PSR radar
-What surveillance technique is ADS-B? - -Cooperative, dependent surveillance
-What is an example of Cooperative, Independent surveillance? - -SSR radar
-How is an aircraft detected by the PSR? - -By reflected electromagnetic energy
transmitted from the radar
-What is radar clutter on an ATM radar? - -Unwanted targets
-What is a limitation to the PSR radar? - -No identification of received echoes
-What is meant by PRI? - -Pulse repetition interval
-What is the purpose of the duplexer? - -To alternately switch the antenna between
receiving and transmitting
-What is the operating principle of the aircraft transponder? - -To code a reply on
the 1090MHz frequency in response to a SSR radar interrogation
-What is transmitted on a Mode C reply from a transponder? - -Pressure altitude
-What is it called when replies from 2 aircraft overlap causing errors in extracting
the included data? - -Garbling
-What is a disadvantage of the classical SSR radar? - -Garbling can occur if 2
aircraft are close in slant range and on the same bearing
-What is a feature of Mode S? - -Selective interrogations to reduce FRUIT
-What is provided with Mode S enhanced surveillance? - -Downlinked aircraft
parameters
-What is a feature of the Monopulse SSR radar? - -Improved azimuth resolution and
fewer pulses needed to determine position
-ADS (automatic dependent surveillance) is a surveillance technique for use by ATS
in which: - -Aircraft automatically provide, via data link, data from on-board
navigation systems
-What is a feature of ADS-B? - -High update rate and simple, omnidirectional
receivers
-Which airborne equipment supports the 1090ES messages? - -The Mode S
transponder
, -What is the dominant ADS-B data link technology in Europe? - -1090 extended
squitter
-What is the purpose of Mode S Short squitter? - -ACAS/TCAS interrogations
-What is variation? - -The difference between true and magnetic north
-What is meant by instrument flight rules? - -Flying by reference to instruments in
the flight deck, and navigation is accomplished by reference to electronic signals
-What is the most common geodetic reference system with global coverage? - -
WGS 84
-What is meant by "dead reckoning"? - -Determining position based on known
speed, course and elapsed time
-What is meant by "course" in relation to aircraft movement? - -The direction over
the ground the aircraft is moving
-What is considered an integrity risk in relation to navigational performance? - -That
undetected navigational system errors results in hazardously and misleading
information to an aircraft
-On what frequency band is the DME operating on? - -UHF
-What is an advantage with the NDB? - -The low operating frequency allow
reception beyond line of sight
-How does the VOR create the different radials? - -By transmitting 2 signals with
different phases
-What information does the pilot get from a NDB? - -Direction only to the station
-What is a disadvantage of the NDB? - -The signal is subject to interference and
reflections
-What airborne equipment is required to make use of a VDF? - -A VHF radio
-What principle is used in VOR bearing measurements? - -Phase comparison
-What elements are required for a ILS? - -LOC, GP and markers or DME
-What information does the pilot get from the glide path? - -The correct vertical
decent profile
-Of what use, if any, can a military TACAN be used by civilian aircraft? - -Civilian
aircraft can use the DME part
-What is EGNOS? - -European satellite augmentation system for GPS/Galileo
What type of surveillance is regarded Non-cooperative, independent surveillance? -
-PSR radar
-What surveillance technique is ADS-B? - -Cooperative, dependent surveillance
-What is an example of Cooperative, Independent surveillance? - -SSR radar
-How is an aircraft detected by the PSR? - -By reflected electromagnetic energy
transmitted from the radar
-What is radar clutter on an ATM radar? - -Unwanted targets
-What is a limitation to the PSR radar? - -No identification of received echoes
-What is meant by PRI? - -Pulse repetition interval
-What is the purpose of the duplexer? - -To alternately switch the antenna between
receiving and transmitting
-What is the operating principle of the aircraft transponder? - -To code a reply on
the 1090MHz frequency in response to a SSR radar interrogation
-What is transmitted on a Mode C reply from a transponder? - -Pressure altitude
-What is it called when replies from 2 aircraft overlap causing errors in extracting
the included data? - -Garbling
-What is a disadvantage of the classical SSR radar? - -Garbling can occur if 2
aircraft are close in slant range and on the same bearing
-What is a feature of Mode S? - -Selective interrogations to reduce FRUIT
-What is provided with Mode S enhanced surveillance? - -Downlinked aircraft
parameters
-What is a feature of the Monopulse SSR radar? - -Improved azimuth resolution and
fewer pulses needed to determine position
-ADS (automatic dependent surveillance) is a surveillance technique for use by ATS
in which: - -Aircraft automatically provide, via data link, data from on-board
navigation systems
-What is a feature of ADS-B? - -High update rate and simple, omnidirectional
receivers
-Which airborne equipment supports the 1090ES messages? - -The Mode S
transponder
, -What is the dominant ADS-B data link technology in Europe? - -1090 extended
squitter
-What is the purpose of Mode S Short squitter? - -ACAS/TCAS interrogations
-What is variation? - -The difference between true and magnetic north
-What is meant by instrument flight rules? - -Flying by reference to instruments in
the flight deck, and navigation is accomplished by reference to electronic signals
-What is the most common geodetic reference system with global coverage? - -
WGS 84
-What is meant by "dead reckoning"? - -Determining position based on known
speed, course and elapsed time
-What is meant by "course" in relation to aircraft movement? - -The direction over
the ground the aircraft is moving
-What is considered an integrity risk in relation to navigational performance? - -That
undetected navigational system errors results in hazardously and misleading
information to an aircraft
-On what frequency band is the DME operating on? - -UHF
-What is an advantage with the NDB? - -The low operating frequency allow
reception beyond line of sight
-How does the VOR create the different radials? - -By transmitting 2 signals with
different phases
-What information does the pilot get from a NDB? - -Direction only to the station
-What is a disadvantage of the NDB? - -The signal is subject to interference and
reflections
-What airborne equipment is required to make use of a VDF? - -A VHF radio
-What principle is used in VOR bearing measurements? - -Phase comparison
-What elements are required for a ILS? - -LOC, GP and markers or DME
-What information does the pilot get from the glide path? - -The correct vertical
decent profile
-Of what use, if any, can a military TACAN be used by civilian aircraft? - -Civilian
aircraft can use the DME part
-What is EGNOS? - -European satellite augmentation system for GPS/Galileo
