Which instrument tracks the survey rod and calculates distance and angles without the surveyor's presence?

The robotic station is an advanced surveying instrument that is capable of automating the measurement of distance and angles, often without the need for the surveyor to be present at the measurement site. It utilizes a combination of electronic distance measurement (EDM) and robotic technology. This allows the instrument to track the survey rod or prism automatically as it moves, adjusting its position and angle accordingly to take accurate measurements continuously.

One of the key features of a robotic station is its ability to be programmed to perform tasks autonomously. This capability significantly increases efficiency and allows for precise data collection in various surveying applications, especially in situations where multiple measurements are required or where the surveyor cannot remain in the direct line of sight of the instrument.

In contrast, other instruments, such as laser levels and total stations, require more direct involvement from the surveyor to take measurements. A laser level typically provides a level reference for alignment rather than tracking moving points, while a total station requires the surveyor to manually aim and measure angles and distances. A transit level is primarily a leveling instrument that also requires direct line-of-sight aiming and does not track a survey rod or operate autonomously.