What can be affected by external conditions when using lidar instruments?

When using lidar instruments, external conditions can significantly influence the operational range of the device. The operational range refers to the maximum distance at which the lidar can accurately measure or detect objects. Factors such as weather conditions (like rain, fog, or snow), sunlight intensity, and environmental obstructions can impact the effectiveness of the lidar system. For instance, heavy rain or fog can scatter the laser pulses emitted by the lidar, resulting in reduced range and accuracy in detection, whereas bright sunlight can interfere with the sensor's ability to register the reflections from the pulsed signals.

While the operational setup and measurement distance can also be influenced by external conditions, they are not as directly or significantly impacted as the operational range. The setup can vary based on individual circumstances, but it is primarily the conditions affecting the transmission and reception of the lidar signals that dictate the effective operational range. Therefore, it's vital to acknowledge that external conditions primarily dictate how far and effectively a lidar system can operate.