What is the role of calibration in radar operation?

• A. Calibration aligns range and bearing measurements with true values, ensuring accuracy and consistent performance.
• B. Calibration aligns color display to user preference.
• C. Calibration sets the transmitter power to maximum.
• D. Calibration is not necessary after initial setup.

Answer: (A)

Calibration in radar operation is about making sure the numbers the radar reports—range to targets and their bearing—match their true values. It compensates for biases and errors that creep in from the RF chain, timing, antenna alignment, and environmental conditions, so distances and directions stay accurate over time.

This matters because drift can occur due to temperature changes, aging components, or mechanical shifts. Regular calibration keeps range and bearing measurements aligned with reality, leading to reliable tracking and situational awareness.

Other statements don’t impact measurement accuracy: adjusting display color is cosmetic, setting transmitter power is a functional parameter, and calibration is not something you can skip after initial setup if you want continued accuracy.