nouvelles de l'entreprise The Revolution of Distance Measurement in Modern Total Stations

The evolution of electronic distance measurement (EDM) has redefined precision in surveying. This article explores three breakthroughs that enabled total stations to measure distances with sub-millimeter accuracy:

1. Phase-Coded Laser Interferometry
Traditional pulse-based EDM systems struggled with atmospheric interference. The 1990s introduced phase-modulated lasers that split beams into reference and measurement paths. Modern instruments like the TS-22 Pro use 1550nm wavelength lasers, achieving ±(1mm + 2ppm) precision over 3km ranges. This technology compensates for temperature-induced refractive index changes using dual-frequency modulation.

2. Multi-Target Discrimination Algorithms
Complex urban environments often require distinguishing overlapping reflections. The TS-22 Pro’s "SmartSpot" algorithm employs machine learning to isolate target signals from noise. Field tests in Dubai’s skyscraper district demonstrated 99.7% accuracy in resolving 12 simultaneous reflections within a 50m radius.

3. Non-Cooperative Targeting Systems
Early EDM required reflective prisms, limiting applications. The 2010s saw breakthroughs in retro-reflective materials and adaptive aperture control. The TS-25 Horizon achieves 100m prismless measurements on light-colored surfaces, while the TS-30 Industrial extends this to 800m using graphene-enhanced receivers.

4. Practical Applications
In 2023, the TS-25 Horizon was pivotal in mapping the Amazon rainforest. Its 15Hz rapid-sampling mode captured 1.2 million elevation points per hectare, creating a 3D model with 5cm vertical accuracy. This data guided sustainable logging operations while preserving endangered species habitats.

Future Directions
Emerging quantum-enhanced EDM systems promise 0.1mm precision over 10km. However, current hybrid systems combining LiDAR and phased arrays remain the industry standard, balancing cost and performance for global infrastructure projects.