Which of the following best describes the three core radar subsystems involved in basic operation?

• A. Receiver, processor, and display
• B. Transmitter, receiver, and antenna
• C. Duplexer, transmitter, and display
• D. Antenna, display, and processor

Answer: (B)

The essential idea is that radar works by generating RF energy, sending it out, and listening for echoes. The three core subsystems that make this possible are the transmitter, the receiver, and the antenna. The transmitter creates the RF pulses that are sent toward targets. The antenna handles both sending the energy and receiving the returning echoes. The receiver then amplifies and processes those echoes to extract range, direction, and other information. While other parts like processors and displays interpret and present the data, they sit downstream of the basic transmission-and-reception chain.