A radar sensor (Radio Detection and Ranging) is a sensing device used to detect objects, measure distance, speed, and motion by transmitting radio-frequency (RF) waves and analyzing the signals reflected back from targets. Radar sensors provide reliable detection over short to long ranges and perform effectively in challenging conditions such as darkness, fog, dust, smoke, or rain.

Radar sensors operate by emitting RF signals and measuring parameters such as time-of-flight, Doppler shift, and signal phase changes to determine an object’s distance, velocity, direction, and presence. Modern radar sensors, particularly millimeter-wave radar operating at frequencies like 24 GHz, 60 GHz, or 77 GHz, offer high resolution, compact size, and low power consumption, making them ideal for embedded and smart systems.

These sensors are widely used in automotive safety systems, industrial automation, robotics, smart vehicles, traffic monitoring, and security applications, where precise object detection and motion tracking are critical.

Modern radar sensors are compact, robust, and capable of real-time data transmission, enabling seamless integration with IoT platforms, autonomous systems, and advanced monitoring networks for improved safety, efficiency, and operational performance.