Commercial · NDA 2023–2024

GeoConverter — geodetic coordinate conversion

Commercial desktop product for sub-millimetre conversion between legacy local coordinate systems and WGS-84. Four-stage numerical calibration, round-trip validation, hardware-locked licensing.

GeoConverter desktop application main window — Desktop product: source points, local system, WGS-84 output.

Problem

Converting coordinates between legacy local systems and modern global datums requires sub-millimetre precision under strong non-linear distortions. Off-the-shelf tools either lose precision or require a server.

Approach

Four-stage pipeline: Helmert/SVD → Levenberg-Marquardt → Nelder-Mead, tolerance 1e-12.
Round-trip error validation: the closed route must return within millimetres.
PyQt6 desktop product with hardware-locked activation keys and an offline license issuer.

Results

round-trip error: <1 mm
local coordinate systems: 20+
release, government clients: Commercial

Stack

Python
NumPy / SciPy
PyQt6
PyInstaller / Nuitka
Hardware-locked licensing

What is public

Source private. Commercial product; client systems and licensing details under NDA.