In terms of surveying, what is "baseline measurement" primarily used for?

The baseline measurement in surveying primarily serves to calculate angles in triangulation. In triangulation, a baseline is established as a known distance between two points, which serves as the foundation for determining the positions of other points using angular measurements. Surveyors will measure the angles from each end of the baseline to additional points, thereby enabling them to form triangles. By employing trigonometric principles, the distances to these unknown points can be accurately calculated based on the angles measured and the baseline's length.

While establishing reference points is essential in surveying, the specific purpose of baseline measurement focuses on facilitating the calculation of angles, making it integral to triangulation processes. This method enables surveyors to create precise maps and establish accurate coordinates, which are crucial for various applications in geodetics and land surveying.

The other options, while related to surveying and geospatial analysis, do not align with the primary purpose of baseline measurements. They reference different aspects of surveying that do not specifically involve the fundamental role of baseline measurements in triangulation.