how surveillance system technologies differ

The three major differences for surveillance technologies are:

• Whether each type requires _______

• Whether _______ is necessary to retrieve data

• How different factors affect ______

additional equipment, aircraft cooperation, accuracy

In a PSR environment _________ equipment is required on the part of the aircraft.

no action or additional

In both SSR and MLAT surveillance environments, the aircraft are required to carry transponders capable of _____.

providing response to ground-based interrogation signals

SMGCS data is limited to surface manoeuvring areas of larger airports and requires _____ for either vehicles or aircraft.

no additional equipment

In an ADS-B surveillance environment, aircraft use _____ to determine their position. That, and other information is broadcast by a ______ for subsequent processing and display.

GNSS, Mode S transponder

PSR ______ cooperation from the aircraft.

does not require

SMGCS _______ cooperation from aircraft or vehicles.

does not require any

SSR and MLAT ______ from the aircraft’s transponder

depend on active replies

Aircraft equipped with ADS-B use GNSS to determine their own position and _______ to relay their position to receiver stations, which is then relayed to ______.

a broadcast communication link, air traffic control facilities

A radar system’s accuracy degrades with ______.

weather conditions, extended ranges, and aircraft altitude

With PSR and SSR, the radiated beam becomes wider as the ______ becomes greater, making the position information less accurate.

distance between the antenna and aircraft

With PSR and SSR, detecting changes in ____ requires several sweeps spaced several seconds apart.

aircraft velocity

MLAT or SMGCS are not as susceptible to some issues of accuracy associated with PSR and SSR because ________.

the distances under surveillance are not as great

The ____ in which SMGCS operates makes it less susceptible to weather-related interference.

frequency

With ADS-B, data accuracy is ________ to the position of the aircraft or the length of time between radar sweeps.

not susceptible

ADS-B signal quality can still be affected by ______ from the aircraft to the receiver, radio frequency interference, ________.

the range from the aircraft to the receiver, obstacles or weather

Space based ADS-B can be affected by _____. However, in-built detection recognizes and discards erroneous signals so that the system maintains _______.

solar activity, full accuracy

What system, present at larger airports, provides airport controllers

with highly accurate position information on aircraft and vehicles

operating on the surface of the airport?

SMGCS

What system is dependent on data from an aircraft's navigation

system to determine and broadcast that aircraft's position?

ADS-B

In radar systems ___ systems rely on reflected radio waves, while ____ systems use an interrogation-reply system.

primary surveillance radar (PSR), secondary surveillance radar (SSR)

SMGCS uses the measured differences in times of arrival of energy waves.

False