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ATSEP BASIC - ALL IN ONE 2026 100%
PASS ASSURED EXAMINATION SOLUTIONS
What type of surveillance is regarded Non-
cooperative, independent surveillance? -
correct answer- PSR radar
What surveillance technique is ADS-B? -
correct answer- Cooperative, dependent
surveillance
What is an example of Cooperative, Independent
surveillance? - correct answer- SSR radar
How is an aircraft detected by the PSR? -
correct answer- By reflected electromagnetic
energy transmitted from the radar
What is radar clutter on an ATM radar? -
correct answer- Unwanted targets
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What is a limitation to the PSR radar? -
correct answer- No identification of received
echoes
What is meant by PRI? - correct answer- Pulse
repetition interval
What is the purpose of the duplexer? - correct
answer- To alternately switch the antenna
between receiving and transmitting
What is the operating principle of the
aircraft transponder? - correct answer- 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? - correct answer- Pressure
altitude
What is it called when replies from 2 aircraft
overlap causing errors in extracting the
included data? - correct answer- Garbling
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What is a disadvantage of the classical SSR
radar? - correct answer- Garbling can occur if
2 aircraft are close in slant range and on the
same bearing
What is a feature of Mode S? - correct answer-
Selective interrogations to reduce FRUIT
What is provided with Mode S enhanced
surveillance? - correct answer- Downlinked
aircraft parameters
What is a feature of the Monopulse SSR radar?
- correct answer- Improved azimuth resolution
and fewer pulses needed to determine position
ADS (automatic dependent surveillance) is a
surveillance technique for use by ATS in
which: - correct answer- Aircraft
automatically provide, via data link, data
from on-board navigation systems
ATSEP BASIC - ALL IN ONE 2026 100%
PASS ASSURED EXAMINATION SOLUTIONS
What type of surveillance is regarded Non-
cooperative, independent surveillance? -
correct answer- PSR radar
What surveillance technique is ADS-B? -
correct answer- Cooperative, dependent
surveillance
What is an example of Cooperative, Independent
surveillance? - correct answer- SSR radar
How is an aircraft detected by the PSR? -
correct answer- By reflected electromagnetic
energy transmitted from the radar
What is radar clutter on an ATM radar? -
correct answer- Unwanted targets
,2 | Page
What is a limitation to the PSR radar? -
correct answer- No identification of received
echoes
What is meant by PRI? - correct answer- Pulse
repetition interval
What is the purpose of the duplexer? - correct
answer- To alternately switch the antenna
between receiving and transmitting
What is the operating principle of the
aircraft transponder? - correct answer- 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? - correct answer- Pressure
altitude
What is it called when replies from 2 aircraft
overlap causing errors in extracting the
included data? - correct answer- Garbling
, 3 | Page
What is a disadvantage of the classical SSR
radar? - correct answer- Garbling can occur if
2 aircraft are close in slant range and on the
same bearing
What is a feature of Mode S? - correct answer-
Selective interrogations to reduce FRUIT
What is provided with Mode S enhanced
surveillance? - correct answer- Downlinked
aircraft parameters
What is a feature of the Monopulse SSR radar?
- correct answer- Improved azimuth resolution
and fewer pulses needed to determine position
ADS (automatic dependent surveillance) is a
surveillance technique for use by ATS in
which: - correct answer- Aircraft
automatically provide, via data link, data
from on-board navigation systems
