Radar sensors are devices that use radio waves to detect and locate objects. They emit radio signals that bounce off objects and return to the sensor, allowing it to determine the distance, speed, and direction of the object. This technology is commonly used in various applications, including aviation, automotive safety, and weather monitoring. These sensors can operate in different weather conditions and are effective over long distances. They are essential for systems like air traffic control and collision avoidance in vehicles, helping to enhance safety and efficiency in transportation and navigation.