The purpose and significance of aerial triangulation

1. Purpose: To provide azimuth control points and azimuth parameters of photos for topographic mapping; Determine the unified coordinates of boundary points in a large range; Coordinate calculation of a large number of ground points in unit model 4. Analysis of close-range photogrammetry and non-terrain photogrammetry.

2. Meaning: the position and geometric shape of the measured object can be determined without touching; It can measure points quickly and synchronously in a large range, thus saving the workload of field measurement.