Why does the front radar keep beeping when there are no obstacles?

[VonCaleb]

The reasons why the front radar keeps beeping when there are no obstacles are: 1. The sensor hole is too small or too tight, or it is installed on an iron or hard guardrail; 2. There is paint, snow, ice, or other attachments on the sensor surface; 3. The sensor characteristics are poor, and the working environment temperature is too low; 4. The sensor is faulty. Automotive radar is used for cars or other ground motor vehicles, including various radars based on different technologies (such as laser, ultrasonic, microwave), with different functions (such as obstacle detection, collision prediction, adaptive cruise control), and using different working principles (such as pulse radar, FMCW radar, microwave impact radar).