What is the function of the RADAR Transmitter?

What is the function of the RADAR Transmitter?

• A. Generates and amplifies an RF carrier, modulates with intelligence, and radiates the signal.
• B. Converts RF energy into audio or video signals.
• C. Collects RF energy from space.
• D. Decodes received video and displays it.

Answer: (A)

The transmitter’s job is to generate the energy that will be sent toward the target. It starts with a radio frequency carrier produced by an oscillator, then a power amplifier increases that carrier to the high power level needed for air propagation, and modulation is applied to imprint the wave with the radar’s control information (such as pulse timing and waveform coding). This modulated, high‑power signal is then fed to the antenna to be radiated into space. The whole system relies on the transmitter to provide the energy that, after striking targets, returns as echoes for the receiver to process. Converting RF energy into audio or video is the role of the detector/receiver chain, not the transmitter. Collecting RF energy from space is what the antenna and receiver do together, and decoding received video and displaying it is a function of the processing/display part after reception.

The transmitter’s job is to generate the energy that will be sent toward the target. It starts with a radio frequency carrier produced by an oscillator, then a power amplifier increases that carrier to the high power level needed for air propagation, and modulation is applied to imprint the wave with the radar’s control information (such as pulse timing and waveform coding). This modulated, high‑power signal is then fed to the antenna to be radiated into space. The whole system relies on the transmitter to provide the energy that, after striking targets, returns as echoes for the receiver to process.

Converting RF energy into audio or video is the role of the detector/receiver chain, not the transmitter. Collecting RF energy from space is what the antenna and receiver do together, and decoding received video and displaying it is a function of the processing/display part after reception.