What are the required radar inputs for proper indicator operation?

The correct answer highlights essential components for radar indicators to operate effectively, focusing on the trigger timing pulses, returning echo, and antenna information.

Trigger timing pulses are crucial as they synchronize the radar system, ensuring that the timing of signal transmission matches that of reception, which allows for accurate location determination of targets. The returning echo is vital because it contains the reflected signal from objects in the radar's path, which is processed to calculate distance, speed, and other characteristics of the targets. Lastly, antenna information provides data about the orientation and position of the radar system, which is necessary for determining where signals are being sent and received, ultimately affecting tracking and display accuracy.

When synthesizing these inputs, they create a comprehensive view of the radar environment, allowing the indicator to provide meaningful data to the operator about the surrounding scenarios.