North Carolina RADAR State Practice Exam

What happens to the measurement accuracy as the angle of the RADAR beam increases?

1. The measurements become more accurate

2. The measurements are unaffected

3. The measurements become less accurate

4. The measurements simplify

The correct answer is: The measurements become less accurate

As the angle of the RADAR beam increases, the measurements tend to become less accurate due to various factors that affect the signal's interaction with the target. At greater angles, the signal can become more susceptible to interference and attenuation, leading to inaccuracies. A steeper angle may also cause the RADAR to sample or reflect signals from a larger area, potentially including multiple targets or obstructions that could distort the readings. Furthermore, the geometry of the target in relation to the RADAR can affect how well the equipment can discern the precise location and speed of the target. A wider angle increases the likelihood that the measurements will include unwanted reflections or background noise, thereby complicating the interpretation of the data and resulting in lower accuracy. In contrast, as angles remain smaller and more direct, the likelihood of interference decreases and the measurements can maintain higher accuracy, providing clearer and more precise information on the targets being monitored.