1. Experimental survey for
the development of the
technology of setting the
track to the design
position on the basis of
the coordinate method
using laser scanning
12-22.05.2015
Chief of the data processing department
Dmitry Yakushev

2. Installation the VMZ-400 system on defectoscopy trolley and surveying the
railways tracks between stations Selyatino – Dachnaya (12km total). The
survey, including primary static and dynamic initialization of the inertial
navigation system, occurred in the period 10:40 – 13:15 21.05.2015.
Hybrid Mobile Laser Mapping System Riegl VMZ-400
(setup & initialization)
The base station on the top of
the Selyatino railway station
The mounting VMZ-400 system on a defectoscopy
trolley

3. Smoothed best estimated trajectory
North/East/Down position errors RMS: 20 – 35mm
Number of satellites at the surveying time
Hybrid Mobile Laser Mapping System Riegl VMZ-400
(gathering data & trajectory analysis)

4. 3D point cloud
Photos
The density of the point cloud (speed ~ 1.5km/h)
Hybrid Mobile Laser Mapping System Riegl VMZ-400
(results of the preliminary processing)

5. • The absolute positioning accuracy
20 - 35 mm;
• The relative accuracy (within one
scan): 5mm;
• The relative accuracy of two
adjacent scans: 10mm;
• The relative accuracy of two
flightlines: 30mm;
Hybrid Mobile Laser Mapping System Riegl VMZ-400
(results of the post-processing)