What is the designation for high frequency Doppler?

The designation for high frequency Doppler is indeed described as "Target." In the context of radar and speed detection, high frequency Doppler signals are utilized to effectively track moving objects, such as vehicles. The term "Target" reflects that the radar system captures and analyzes the speed and movement of specific objects that are the focus of detection.

High frequency Doppler is employed because it allows for greater sensitivity and accuracy when determining the speed of moving objects. This is crucial in speed detection scenarios where distinguishing between different speeds can directly impact enforcement decisions and safety measures. By designating these high frequency signals as "Target," operators can clearly identify the signals associated with vehicles or objects they are monitoring, which is vital for accurate speed reading interpretations.

The other designations do not capture this specific functionality of high frequency Doppler as effectively, making "Target" the correct choice.