A LiDAR sensor (Light Detection and Ranging) is an advanced sensing device used to measure distance, map surroundings, and detect objects by emitting laser pulses and analyzing the reflected light from targets. It provides highly accurate, high-resolution spatial data by calculating the time it takes for the laser light to travel to an object and return to the sensor.

LiDAR sensors operate on the time-of-flight (ToF) principle, using short bursts of laser light, typically in the near-infrared spectrum. By continuously scanning an area, LiDAR can generate precise 2D or 3D representations of environments, capturing details such as object shape, size, position, and movement.

Compared to ultrasonic or infrared sensors, LiDAR offers longer range, faster response, and superior accuracy, making it ideal for applications requiring detailed spatial awareness. Modern LiDAR sensors are compact, energy-efficient, and capable of real-time data transmission, enabling integration with autonomous vehicles, robotics, industrial automation, mapping, and environmental monitoring systems.

LiDAR sensors are widely used in autonomous navigation, obstacle detection, terrain mapping, smart infrastructure, and advanced robotics, where precise distance measurement and environmental modeling are critical for safety, efficiency, and operational performance.