The accuracy of LiDAR is determined by how closely the measured values or collected data align with the true values of the real physical world. It is a measure of the precision and correctness of the LiDAR system in measuring elevations, distances and positions. Accuracy is important in applications where precise measurements are critical, such as in construction or surveying.
Sensor Calibration: Properly calibrated LiDAR sensors are essential for accurate data collection. Any errors or misalignments in the sensor can result in inaccuracies.
Georeferencing: Accurate GPS and IMU (Inertial Measurement Unit) data are necessary to georeference LiDAR point clouds to real-world coordinates. Even small errors in these systems can reduce the accuracy.
Environmental Conditions: Factors like weather conditions, temperature, and atmospheric interference can affect LiDAR accuracy. For example, rain, fog, or dust in the air can cause the laser beams to scatter and introduce errors.