How does airport radar work

1) Clouds. Radar beams reflect off nearly everything, including clouds. But before NEXRAD radar images are sent to your iPhone, non-precipitation items are filtered out, including clouds. Unless it’s rain or snow , chances are it’s not showing up on your radar image.

Common aviation radars will filter out small, slow-moving objects , so even a metallic or carbon-composite airframe several centimeters across will not be detected.

Radar is used in fighter aircraft for finding enemy aircraft and controlling air-to-air missiles, rockets, and guns . It is used in bombers to find surface targets, fixed or moving, and to navigate and avoid obstacles.