Why is it difficult to detect static objects using a 24 GHz RADAR system in cars particularly at high speeds ? static objects could be a stationary vehicle, a police barrier, a animal on the road or a dead end like a wall or tree etc…
It is easier to detect a moving vehicle than the static object. Why is that so ?
Considering both moving and stationary object will reflect back RADAR pulses.
The RADAR system is a Front Collision Warning System installed in the front of the car.
Electronic – Detecting static objects in view using RADAR
radar
Best Answer
It is because of ground clutter. Car manufacturers use Doppler radar. Doppler radar utilizes the Doppler effect to help the radar to distinguish objects that are close together.
You can see how the moving object has different frequency and can be distinguished from the terrain even though the range return is identical. The problem with stationary objects is that they have the same Doppler shift as the earth, trees, signs etc. The radar cannot distinguish between a dead animal and the road.