Unit 1a: Transponders Flashcards
What is a radio radar or sonar transceiver that automatically transmits a signal upon reception. This is used for detection identification and location of objects
Transponder
Which type of transponder is a reflective signal and must be used with an active sensor computer
Passive
Which type of transponder is for airborne communication and responds to interrogation. It also responds to a different frequency when a signal is received it is also for satellite and network communication.
Active
What is the principle of transmitting a narrow beam of RF which is then reflected from the aircraft and returned to source. This does not require a reply and has no barometric Altitude and identification information
Primary Surveillance Radar (PSR)
What is known as transmitting interrogation signals from the ground station to the aircraft transponder. This does require a reply and gives barometric Altitude and identification information
Secondary surveillance radar (SSR)
Which is combined and uses two different frequencies to allow continued communication with aircraft
ATC Radar Beacon System (ATCRBS)
What is the Rx and Tx frequency of the ATCRBS
Receive: 1030 MHz
Transmit: 1090 MHz
What component contains primary control functions
Control Unit
What are the components of a transponder
Control Unit, ATC Transponder RT, and L-Band Antenna
What component of the RT has one antenna for transmitting and receiving
Diplexer
What component of the RT receives
Receiver
What component of the RT determines the validity of the incoming signal
Decoder
What component of the RT generates a reply signal
Encoder
What component of the RT produces DC pulses
Modulator
What component of the RT produces a RF reply pulse
Transmitter
