ATCR-33 RF System Overview

These flashcards summarize the key concepts and components of the ATCR-33 RF system as discussed in the lecture.

What are the two main ATCR configurations for the RF system?

Dual channel with frequency diversity and Double channel with redundancy.

What does the duplexer do in the RF system?

The duplexer allows high-power transmission to the antenna while protecting the receiver circuit and enables the received signal to reach the receiver.

What is the role of the gas valve T/R switch in the duplexer?

The T/R switch fires on the arrival of the transmitted pulse, reflecting RF energy towards the directional coupler.

What function does the Automatic Frequency Control (AFC) serve during the transmission?

AFC helps in automatically maintaining the frequency stability of the radar receiver.

What does the rotating joint provide in the antenna system?

The rotating joint connects fixed signal paths with the rotating antenna, facilitating energy transmission and data access.

What is the purpose of the polarizer in the RF system?

The polarizer allows the antenna to operate with different types of polarization, which aids in attenuating clutter from asymmetrical targets.

What does the auxiliary beam system enhance in radar operations?

The auxiliary beam system improves target detection in clutter areas by providing additional beam characteristics.

What is the purpose of the Coaxial Limiter in the receiving channel?

The Coaxial Limiter limits the amplitude of interference signals from external sources to protect the receiver.

How does the diplexer function differently during transmission and reception?

During transmission, the diplexer routes RF pulses along a single channel; during reception, it separates echoes from targets and routes them to the correct receiver.

What allows the double channel configuration with redundancy to function?

An RF switch operated from the radar control panel connects one channel to the antenna while connecting the standby channel to a dummy load, ensuring seamless operation and backup capability in case of failure.