radar Flashcards
what does RADAR stand for?
radio detection and ranging
what are the two types of radars?
primary and secondary surveillance radars.
how do primary surveillance radars work?
sends out a signal which bounces off everything that signal reaches. if the echo is received by the radar receiver, it produces an image on the radar screen.
the time delay between the transmission of the pulse and the receipt of the reflected return is a measure of range.
where are PSR found and what are their max ranges?
auckland, christchurch and near welly airport. with a max of 80nm
how do secondary surveillance radars work?
require an aircraft to have a transponder.
it broadcasts a signal which causes the transponder in an aircraft to respond with a signal. the transponder doesn’t transmit if it hasn’t been interrogated by the SSR.
how many SSR do NZ have?
6, marked on nav charts with a max range of 256NM
what do Mode A and Mode C do?
mode a, it transmits a four digit code which is set by the pilot. if you filed a flight plane you’ll be assigned a specific code for the flight.
mode c will transmit the four digit code and the transponder will also transmit the aircraft altitude.
what happesn if transponder is on the ON position?
Mode A is selected, to go Mode C select ALT.
what are the radar services available for VFR flights?
navigation assistance, traffic information and weather information.
