What is the maximum deviation of the true azimuth of the radar to measure azimuth as determined by the method of alignment Compass or Survey?

• A. Azimuth Uncertainty
• B. Location Uncertainty
• C. Bearing Error
• D. Heading Deviation

Answer: (A)

When you align the radar using a compass or a survey, you’re setting a reference for the horizontal direction, and there will be some residual error in how true directions map to the radar’s indicated directions. The measure that describes the maximum deviation of the true azimuth from what the radar indicates after that alignment is Azimuth Uncertainty. It captures the overall angular accuracy of the radar’s azimuth reference, including errors from the compass, survey data, and the instrument itself.

Location Uncertainty relates to where you are in space, not which way you’re pointing. Bearing error describes the difference between a measured bearing to a target and its true bearing, which is a related concept but not the standard term for the overall azimuth reference uncertainty established by compass or survey alignment. Heading deviation refers to the platform’s heading error, which can influence azimuth readings but is not the direct measure of the azimuth deviation after alignment. Therefore, the maximum deviation of the true azimuth in this alignment context is Azimuth Uncertainty.