What is the main goal of employing photogrammetry in geodesy?

The main goal of employing photogrammetry in geodesy is to use photography for surveying and mapping. Photogrammetry involves taking measurements from photographs, typically aerial images, to determine the spatial relationships and dimensions of objects on the Earth’s surface. This technique allows for the creation of accurate representations of terrain and features, enabling geodesists to produce maps, models, and other critical spatial data.

It's particularly valuable in situations where traditional ground surveying methods might be impractical or time-consuming. Through photogrammetry, geodetic engineers can effectively capture a large area’s topography and characteristics with precision, significantly enhancing the efficiency and effectiveness of geospatial data collection and analysis.