In radar technology, what does "Audio Doppler" help with?

Audio Doppler is a crucial feature in radar technology that aids in the identification of target speed. The Doppler effect, which this technology leverages, occurs when there is a relative motion between the radar source and the target. As the target approaches, the frequency of the reflected signal increases, while it decreases when the target is moving away.

This shift in frequency can be translated into a speed value, allowing operators to determine how fast a vehicle is traveling relative to the radar unit. By providing auditory cues associated with the changes in frequency, Audio Doppler enhances the operator's ability to identify and confirm the speed of a target effectively, thereby increasing accuracy in speed enforcement situations.

In contrast, other options do not encompass the primary function of Audio Doppler. Assessing distance to the target pertains more to the range measurement capabilities of radar rather than speed. Improving visual display might relate to visual signal processing but does not directly involve the audio output of the Doppler effect. Limiting signal interference deals with the stability and clarity of the radar signal itself, rather than its speed measurement capabilities.