Which item is a radar altimeter component?

Which item is a radar altimeter component?

• A. Receiver-Transmitter
• B. Radar Altimeter Display Panel
• C. Jet fuel gauge
• D. Altimeter pressure sensor

Answer: (A)

Radar altimeters determine altitude by sending a radar pulse toward the ground and measuring the echo that returns. The essential part making this work is the receiver-transmitter, which both emits the pulse and receives the reflected signal. The display panel is just the readout of the measurement, not the mechanism that creates or detects the radar signal. The jet fuel gauge and the altimeter pressure sensor relate to different systems—one measures fuel, the other uses air pressure for non-radar altitude—so they’re not the active radar measurement components. So the transmitter-receiver block is the key component that enables radar altitude measurement.

Radar altimeters determine altitude by sending a radar pulse toward the ground and measuring the echo that returns. The essential part making this work is the receiver-transmitter, which both emits the pulse and receives the reflected signal. The display panel is just the readout of the measurement, not the mechanism that creates or detects the radar signal. The jet fuel gauge and the altimeter pressure sensor relate to different systems—one measures fuel, the other uses air pressure for non-radar altitude—so they’re not the active radar measurement components. So the transmitter-receiver block is the key component that enables radar altitude measurement.