a better position accuracy is obtained but the integrity of the system is not improved. 

the integrity is improved by reducing the mean failure reporting time from up to 3 hours to 6 seconds

the errors caused by multi path and noise are eliminated.

the errors caused by multi path and noise are eliminated. 

no improvements are obtained apart from the redundancy

secondary radar in the SHF band.

primary radar in the UHF band.

secondary radar in the VHF band.

primary radar in the SHF band.

detect small as well as large cloud formations.

obtain optimum use of the cosecant squared beam.

transmit at a higher pulse repetition frequency for extended range.

detect larger water droplets.

By the SSR interrogator in order to request the identification of an aircraft.

Automatically when the transponder responds to a mode A interrogation.

By the SSR interrogator if it is suspected that responses are received from aircraft that are located in thedirection of the side lobes of the interrogator antenna.

By the transponder as a result of the pilot pushing the IDENT button.

Controller-Pilot Data-Link Communications (CPDLC) will reply with a unique aircraft identifier.

By limiting the beam width of the SSR transmission.

With a unique 24-bit address in the interrogation.

The SSR interrogation is directed to the aircraft's position.

Fly through, turning on the anti-icing equipment available.

Fly 5 NM to the side of the thunderstorm.

Fly on the upwind side of the storm, avoiding red and magenta coloured areas on the screen.

Fly through, avoiding magenta on your AWR.

areas of severe clear air turbulence.

all kinds of frozen precipitation such as hail, snow and graupel.

areas of wind shear and severe aircraft icing.

the kinds of precipitation which are usually accompanied by turbulence.

100 ft increments.

100 m increments.

25 ft increments.

50 m increments.

960 to 1215 kHz

329 to 335 MHz

960 to 1215 MHZ

108 to 118 MHz

The magnetic bearing from the station

The true bearing from the station

The magnetic bearing to the station

The true bearing to the station