It features functions that allow working with projected and local geographic coordinate systems, including support for multiple ellipsoids, datums, projections and geoid models.

This module integrates the geodesic parameter database of the OGP (International Association of Oil & Gas Producers, formed in 2005 after merging with the EPSG - the European Petroleum Survey Group), featuring hundreds of coordinate systems and transformations of geodesic and vertical datums from all the regions around the world.

MDT includes the cartographic project library PROJ.4 as well.

Its powerful geodesic calculator is very useful for most common coordinate transformations.

The software converts most of the files obtained from total stations and data collectors. The distinction between points and stations can be configured based on their numbers or codes. Using an editor helps to filter and classify observations.

MDT computes coordinates by radiation, inverse bisection, direct intersection, inverse intersection and leveling procedures. It draws points and stations as well.

It calculates the disorientation of reciprocal observations and instrument angle errors (azimuth and zenith) for direct-inverse circle observations.

When calculating average distances and height differences, it can apply adjustments to measured points which are computed from observation equations. Other optional corrections are atmospheric factors, refraction and sphericity, distance reduction to horizon, sea level and reduction to ellipsoid.

MDT can make itinerary compensation (closed, open or linked to one or more fixed points), as well as network compensation by different methods: using angles, distances or both, by least squares, proportional to coordinates, proportional to distances, Crandall’s Law, or rotation and homothety.

Observation data can be shown in total station or theodolite modes, choosing for display horizontal or geometric distance, vertical angle or height difference.

It can perform the following coordinate transformations methods: 
• 2D: XY translations, Helmert 4 parameters, Affine and Projective.
• 3D: XYZ translations and Helmert 7 parameters.
• 2D+1D: Helmert 4 parameters + Z Displacement and Helmert 4 parameters + Z Displacement and Gradients in XY.

The transformations can be created by parameters, points or import of origin and destination coordinate files.

MDT can also import local systems defined by our TcpGPS software.