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